Home / 39,221.60-54,126.15-21,316.62

Finding the Fourth Proportional to 39,221.60, 54,126.15 and 21,316.62

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Solution

The fourth proportional to 39,221.60, 54,126.15 and 21,316.62 is: 29,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.60 : 54,126.15 = 21,316.62 : x
  2. Step 2: Convert to fraction form
    39,221.60/54,126.15 = 21,316.62/x
  3. Step 3: Cross multiply
    39,221.60x = 54,126.15 × 21,316.62
  4. Step 4: Simplify right side
    39,221.60x = 1,153,786,571.61
  5. Step 5: Solve for x
    x = 1,153,786,571.61/39,221.60
  6. Step 6: Final answer
    x = 29,417.12

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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.