Home / 15,417.21-21,275.81-8,343.63

Finding the Fourth Proportional to 15,417.21, 21,275.81 and 8,343.63

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Solution

The fourth proportional to 15,417.21, 21,275.81 and 8,343.63 is: 11,514.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.21 : 21,275.81 = 8,343.63 : x
  2. Step 2: Convert to fraction form
    15,417.21/21,275.81 = 8,343.63/x
  3. Step 3: Cross multiply
    15,417.21x = 21,275.81 × 8,343.63
  4. Step 4: Simplify right side
    15,417.21x = 177,517,486.59
  5. Step 5: Solve for x
    x = 177,517,486.59/15,417.21
  6. Step 6: Final answer
    x = 11,514.24

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Half scale
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Double scale
Find fourth proportional to 15,418.21, 21,277.19 and 8,344.63
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.