Home / 39,442.86-54,432.42-21,538.80

Finding the Fourth Proportional to 39,442.86, 54,432.42 and 21,538.80

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Solution

The fourth proportional to 39,442.86, 54,432.42 and 21,538.80 is: 29,724.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.86 : 54,432.42 = 21,538.80 : x
  2. Step 2: Convert to fraction form
    39,442.86/54,432.42 = 21,538.80/x
  3. Step 3: Cross multiply
    39,442.86x = 54,432.42 × 21,538.80
  4. Step 4: Simplify right side
    39,442.86x = 1,172,409,007.90
  5. Step 5: Solve for x
    x = 1,172,409,007.90/39,442.86
  6. Step 6: Final answer
    x = 29,724.24

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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.