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Finding the Fourth Proportional to 28,595.97, 42,899.69 and 9,876.70

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Solution

The fourth proportional to 28,595.97, 42,899.69 and 9,876.70 is: 14,817.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.97 : 42,899.69 = 9,876.70 : x
  2. Step 2: Convert to fraction form
    28,595.97/42,899.69 = 9,876.70/x
  3. Step 3: Cross multiply
    28,595.97x = 42,899.69 × 9,876.70
  4. Step 4: Simplify right side
    28,595.97x = 423,707,446.54
  5. Step 5: Solve for x
    x = 423,707,446.54/28,595.97
  6. Step 6: Final answer
    x = 14,817.03

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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.