Home / 31,230.77-43,034.69-22,259.21

Finding the Fourth Proportional to 31,230.77, 43,034.69 and 22,259.21

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Solution

The fourth proportional to 31,230.77, 43,034.69 and 22,259.21 is: 30,672.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,230.77 : 43,034.69 = 22,259.21 : x
  2. Step 2: Convert to fraction form
    31,230.77/43,034.69 = 22,259.21/x
  3. Step 3: Cross multiply
    31,230.77x = 43,034.69 × 22,259.21
  4. Step 4: Simplify right side
    31,230.77x = 957,918,042.47
  5. Step 5: Solve for x
    x = 957,918,042.47/31,230.77
  6. Step 6: Final answer
    x = 30,672.26

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Find fourth proportional to 15,615.38, 21,517.35 and 11,129.60
Half scale
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Double scale
Find fourth proportional to 31,231.77, 43,036.07 and 22,260.21
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.