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Finding the Fourth Proportional to 28,306.56, 42,474.56 and 15,818.88

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Solution

The fourth proportional to 28,306.56, 42,474.56 and 15,818.88 is: 23,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.56 : 42,474.56 = 15,818.88 : x
  2. Step 2: Convert to fraction form
    28,306.56/42,474.56 = 15,818.88/x
  3. Step 3: Cross multiply
    28,306.56x = 42,474.56 × 15,818.88
  4. Step 4: Simplify right side
    28,306.56x = 671,899,967.69
  5. Step 5: Solve for x
    x = 671,899,967.69/28,306.56
  6. Step 6: Final answer
    x = 23,736.55

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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.