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Finding the Fourth Proportional to 28,191.98, 42,292.86 and 9,473.85

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Solution

The fourth proportional to 28,191.98, 42,292.86 and 9,473.85 is: 14,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.98 : 42,292.86 = 9,473.85 : x
  2. Step 2: Convert to fraction form
    28,191.98/42,292.86 = 9,473.85/x
  3. Step 3: Cross multiply
    28,191.98x = 42,292.86 × 9,473.85
  4. Step 4: Simplify right side
    28,191.98x = 400,676,211.71
  5. Step 5: Solve for x
    x = 400,676,211.71/28,191.98
  6. Step 6: Final answer
    x = 14,212.42

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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.