Home / 39,443.72-54,432.32-21,538.80

Finding the Fourth Proportional to 39,443.72, 54,432.32 and 21,538.80

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Solution

The fourth proportional to 39,443.72, 54,432.32 and 21,538.80 is: 29,723.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.72 : 54,432.32 = 21,538.80 : x
  2. Step 2: Convert to fraction form
    39,443.72/54,432.32 = 21,538.80/x
  3. Step 3: Cross multiply
    39,443.72x = 54,432.32 × 21,538.80
  4. Step 4: Simplify right side
    39,443.72x = 1,172,406,854.02
  5. Step 5: Solve for x
    x = 1,172,406,854.02/39,443.72
  6. Step 6: Final answer
    x = 29,723.54

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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.