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Finding the Fourth Proportional to 35,781.60, 53,691.60 and 15,007.20

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Solution

The fourth proportional to 35,781.60, 53,691.60 and 15,007.20 is: 22,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.60 : 53,691.60 = 15,007.20 : x
  2. Step 2: Convert to fraction form
    35,781.60/53,691.60 = 15,007.20/x
  3. Step 3: Cross multiply
    35,781.60x = 53,691.60 × 15,007.20
  4. Step 4: Simplify right side
    35,781.60x = 805,760,579.52
  5. Step 5: Solve for x
    x = 805,760,579.52/35,781.60
  6. Step 6: Final answer
    x = 22,518.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.