Home / 39,231.47-54,140.49-21,327.68

Finding the Fourth Proportional to 39,231.47, 54,140.49 and 21,327.68

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Solution

The fourth proportional to 39,231.47, 54,140.49 and 21,327.68 is: 29,432.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.47 : 54,140.49 = 21,327.68 : x
  2. Step 2: Convert to fraction form
    39,231.47/54,140.49 = 21,327.68/x
  3. Step 3: Cross multiply
    39,231.47x = 54,140.49 × 21,327.68
  4. Step 4: Simplify right side
    39,231.47x = 1,154,690,775.06
  5. Step 5: Solve for x
    x = 1,154,690,775.06/39,231.47
  6. Step 6: Final answer
    x = 29,432.77

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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.