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Finding the Fourth Proportional to 15,052.95, 20,770.63 and 9,005.69

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Solution

The fourth proportional to 15,052.95, 20,770.63 and 9,005.69 is: 12,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,052.95 : 20,770.63 = 9,005.69 : x
  2. Step 2: Convert to fraction form
    15,052.95/20,770.63 = 9,005.69/x
  3. Step 3: Cross multiply
    15,052.95x = 20,770.63 × 9,005.69
  4. Step 4: Simplify right side
    15,052.95x = 187,053,854.88
  5. Step 5: Solve for x
    x = 187,053,854.88/15,052.95
  6. Step 6: Final answer
    x = 12,426.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.