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Finding the Fourth Proportional to 25,781.20, 36,006.20 and 25,781.20

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Solution

The fourth proportional to 25,781.20, 36,006.20 and 25,781.20 is: 36,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.20 : 36,006.20 = 25,781.20 : x
  2. Step 2: Convert to fraction form
    25,781.20/36,006.20 = 25,781.20/x
  3. Step 3: Cross multiply
    25,781.20x = 36,006.20 × 25,781.20
  4. Step 4: Simplify right side
    25,781.20x = 928,283,043.44
  5. Step 5: Solve for x
    x = 928,283,043.44/25,781.20
  6. Step 6: Final answer
    x = 36,006.20

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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.