Home / 39,517.80-54,531.78-21,612.42

Finding the Fourth Proportional to 39,517.80, 54,531.78 and 21,612.42

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Solution

The fourth proportional to 39,517.80, 54,531.78 and 21,612.42 is: 29,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,517.80 : 54,531.78 = 21,612.42 : x
  2. Step 2: Convert to fraction form
    39,517.80/54,531.78 = 21,612.42/x
  3. Step 3: Cross multiply
    39,517.80x = 54,531.78 × 21,612.42
  4. Step 4: Simplify right side
    39,517.80x = 1,178,563,732.71
  5. Step 5: Solve for x
    x = 1,178,563,732.71/39,517.80
  6. Step 6: Final answer
    x = 29,823.62

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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.