Home / 39,221.52-54,126.05-21,316.57

Finding the Fourth Proportional to 39,221.52, 54,126.05 and 21,316.57

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Solution

The fourth proportional to 39,221.52, 54,126.05 and 21,316.57 is: 29,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.52 : 54,126.05 = 21,316.57 : x
  2. Step 2: Convert to fraction form
    39,221.52/54,126.05 = 21,316.57/x
  3. Step 3: Cross multiply
    39,221.52x = 54,126.05 × 21,316.57
  4. Step 4: Simplify right side
    39,221.52x = 1,153,781,651.62
  5. Step 5: Solve for x
    x = 1,153,781,651.62/39,221.52
  6. Step 6: Final answer
    x = 29,417.06

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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.