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Finding the Fourth Proportional to 15,022.52, 20,727.87 and 8,731.52

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Solution

The fourth proportional to 15,022.52, 20,727.87 and 8,731.52 is: 12,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.52 : 20,727.87 = 8,731.52 : x
  2. Step 2: Convert to fraction form
    15,022.52/20,727.87 = 8,731.52/x
  3. Step 3: Cross multiply
    15,022.52x = 20,727.87 × 8,731.52
  4. Step 4: Simplify right side
    15,022.52x = 180,985,811.46
  5. Step 5: Solve for x
    x = 180,985,811.46/15,022.52
  6. Step 6: Final answer
    x = 12,047.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.