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Finding the Fourth Proportional to 28,475.56, 42,713.34 and 8,753.86

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Solution

The fourth proportional to 28,475.56, 42,713.34 and 8,753.86 is: 13,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.56 : 42,713.34 = 8,753.86 : x
  2. Step 2: Convert to fraction form
    28,475.56/42,713.34 = 8,753.86/x
  3. Step 3: Cross multiply
    28,475.56x = 42,713.34 × 8,753.86
  4. Step 4: Simplify right side
    28,475.56x = 373,906,598.49
  5. Step 5: Solve for x
    x = 373,906,598.49/28,475.56
  6. Step 6: Final answer
    x = 13,130.79

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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.