Home / 31,210.09-43,065.63-17,778.75

Finding the Fourth Proportional to 31,210.09, 43,065.63 and 17,778.75

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Solution

The fourth proportional to 31,210.09, 43,065.63 and 17,778.75 is: 24,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.09 : 43,065.63 = 17,778.75 : x
  2. Step 2: Convert to fraction form
    31,210.09/43,065.63 = 17,778.75/x
  3. Step 3: Cross multiply
    31,210.09x = 43,065.63 × 17,778.75
  4. Step 4: Simplify right side
    31,210.09x = 765,653,069.36
  5. Step 5: Solve for x
    x = 765,653,069.36/31,210.09
  6. Step 6: Final answer
    x = 24,532.23

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Find fourth proportional to 15,605.05, 21,532.82 and 8,889.38
Half scale
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Double scale
Find fourth proportional to 31,211.09, 43,067.01 and 17,779.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.