Home / 39,224.12-54,129.54-21,319.28

Finding the Fourth Proportional to 39,224.12, 54,129.54 and 21,319.28

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Solution

The fourth proportional to 39,224.12, 54,129.54 and 21,319.28 is: 29,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,224.12 : 54,129.54 = 21,319.28 : x
  2. Step 2: Convert to fraction form
    39,224.12/54,129.54 = 21,319.28/x
  3. Step 3: Cross multiply
    39,224.12x = 54,129.54 × 21,319.28
  4. Step 4: Simplify right side
    39,224.12x = 1,154,002,819.53
  5. Step 5: Solve for x
    x = 1,154,002,819.53/39,224.12
  6. Step 6: Final answer
    x = 29,420.74

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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.