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Finding the Fourth Proportional to 28,972.84, 43,458.90 and 9,251.14

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Solution

The fourth proportional to 28,972.84, 43,458.90 and 9,251.14 is: 13,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.84 : 43,458.90 = 9,251.14 : x
  2. Step 2: Convert to fraction form
    28,972.84/43,458.90 = 9,251.14/x
  3. Step 3: Cross multiply
    28,972.84x = 43,458.90 × 9,251.14
  4. Step 4: Simplify right side
    28,972.84x = 402,044,368.15
  5. Step 5: Solve for x
    x = 402,044,368.15/28,972.84
  6. Step 6: Final answer
    x = 13,876.60

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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.