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Finding the Fourth Proportional to 35,517.28, 53,275.92 and 12,143.92

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Solution

The fourth proportional to 35,517.28, 53,275.92 and 12,143.92 is: 18,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,517.28 : 53,275.92 = 12,143.92 : x
  2. Step 2: Convert to fraction form
    35,517.28/53,275.92 = 12,143.92/x
  3. Step 3: Cross multiply
    35,517.28x = 53,275.92 × 12,143.92
  4. Step 4: Simplify right side
    35,517.28x = 646,978,510.41
  5. Step 5: Solve for x
    x = 646,978,510.41/35,517.28
  6. Step 6: Final answer
    x = 18,215.88

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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.