Home / 39,221.38-54,126.05-21,316.38

Finding the Fourth Proportional to 39,221.38, 54,126.05 and 21,316.38

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Solution

The fourth proportional to 39,221.38, 54,126.05 and 21,316.38 is: 29,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.38 : 54,126.05 = 21,316.38 : x
  2. Step 2: Convert to fraction form
    39,221.38/54,126.05 = 21,316.38/x
  3. Step 3: Cross multiply
    39,221.38x = 54,126.05 × 21,316.38
  4. Step 4: Simplify right side
    39,221.38x = 1,153,771,276.21
  5. Step 5: Solve for x
    x = 1,153,771,276.21/39,221.38
  6. Step 6: Final answer
    x = 29,416.90

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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.