Home / 39,431.06-54,414.12-21,526.20

Finding the Fourth Proportional to 39,431.06, 54,414.12 and 21,526.20

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Solution

The fourth proportional to 39,431.06, 54,414.12 and 21,526.20 is: 29,705.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.06 : 54,414.12 = 21,526.20 : x
  2. Step 2: Convert to fraction form
    39,431.06/54,414.12 = 21,526.20/x
  3. Step 3: Cross multiply
    39,431.06x = 54,414.12 × 21,526.20
  4. Step 4: Simplify right side
    39,431.06x = 1,171,329,229.94
  5. Step 5: Solve for x
    x = 1,171,329,229.94/39,431.06
  6. Step 6: Final answer
    x = 29,705.75

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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.