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Finding the Fourth Proportional to 28,294.51, 42,441.96 and 8,574.52

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Solution

The fourth proportional to 28,294.51, 42,441.96 and 8,574.52 is: 12,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294.51 : 42,441.96 = 8,574.52 : x
  2. Step 2: Convert to fraction form
    28,294.51/42,441.96 = 8,574.52/x
  3. Step 3: Cross multiply
    28,294.51x = 42,441.96 × 8,574.52
  4. Step 4: Simplify right side
    28,294.51x = 363,919,434.86
  5. Step 5: Solve for x
    x = 363,919,434.86/28,294.51
  6. Step 6: Final answer
    x = 12,861.84

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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.