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Finding the Fourth Proportional to 27,079.20, 40,618.80 and 13,957.20

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Solution

The fourth proportional to 27,079.20, 40,618.80 and 13,957.20 is: 20,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,079.20 : 40,618.80 = 13,957.20 : x
  2. Step 2: Convert to fraction form
    27,079.20/40,618.80 = 13,957.20/x
  3. Step 3: Cross multiply
    27,079.20x = 40,618.80 × 13,957.20
  4. Step 4: Simplify right side
    27,079.20x = 566,924,715.36
  5. Step 5: Solve for x
    x = 566,924,715.36/27,079.20
  6. Step 6: Final answer
    x = 20,935.80

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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.