Home / 39,581.92-54,623.12-21,432.84

Finding the Fourth Proportional to 39,581.92, 54,623.12 and 21,432.84

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Solution

The fourth proportional to 39,581.92, 54,623.12 and 21,432.84 is: 29,577.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,581.92 : 54,623.12 = 21,432.84 : x
  2. Step 2: Convert to fraction form
    39,581.92/54,623.12 = 21,432.84/x
  3. Step 3: Cross multiply
    39,581.92x = 54,623.12 × 21,432.84
  4. Step 4: Simplify right side
    39,581.92x = 1,170,728,591.26
  5. Step 5: Solve for x
    x = 1,170,728,591.26/39,581.92
  6. Step 6: Final answer
    x = 29,577.36

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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.