Home / 39,166.18-54,049.40-21,261.20

Finding the Fourth Proportional to 39,166.18, 54,049.40 and 21,261.20

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Solution

The fourth proportional to 39,166.18, 54,049.40 and 21,261.20 is: 29,340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,166.18 : 54,049.40 = 21,261.20 : x
  2. Step 2: Convert to fraction form
    39,166.18/54,049.40 = 21,261.20/x
  3. Step 3: Cross multiply
    39,166.18x = 54,049.40 × 21,261.20
  4. Step 4: Simplify right side
    39,166.18x = 1,149,154,938.54
  5. Step 5: Solve for x
    x = 1,149,154,938.54/39,166.18
  6. Step 6: Final answer
    x = 29,340.49

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Half scale
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Double scale
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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.