Home / 39,436.11-54,421.56-21,531.06

Finding the Fourth Proportional to 39,436.11, 54,421.56 and 21,531.06

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Solution

The fourth proportional to 39,436.11, 54,421.56 and 21,531.06 is: 29,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,436.11 : 54,421.56 = 21,531.06 : x
  2. Step 2: Convert to fraction form
    39,436.11/54,421.56 = 21,531.06/x
  3. Step 3: Cross multiply
    39,436.11x = 54,421.56 × 21,531.06
  4. Step 4: Simplify right side
    39,436.11x = 1,171,753,873.65
  5. Step 5: Solve for x
    x = 1,171,753,873.65/39,436.11
  6. Step 6: Final answer
    x = 29,712.71

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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.