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Finding the Fourth Proportional to 18,207.40, 25,542.20 and 18,207.40

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Solution

The fourth proportional to 18,207.40, 25,542.20 and 18,207.40 is: 25,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.40 : 25,542.20 = 18,207.40 : x
  2. Step 2: Convert to fraction form
    18,207.40/25,542.20 = 18,207.40/x
  3. Step 3: Cross multiply
    18,207.40x = 25,542.20 × 18,207.40
  4. Step 4: Simplify right side
    18,207.40x = 465,057,052.28
  5. Step 5: Solve for x
    x = 465,057,052.28/18,207.40
  6. Step 6: Final answer
    x = 25,542.20

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.