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Finding the Fourth Proportional to 15,013.80, 20,712.42 and 9,041.94

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Solution

The fourth proportional to 15,013.80, 20,712.42 and 9,041.94 is: 12,473.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.80 : 20,712.42 = 9,041.94 : x
  2. Step 2: Convert to fraction form
    15,013.80/20,712.42 = 9,041.94/x
  3. Step 3: Cross multiply
    15,013.80x = 20,712.42 × 9,041.94
  4. Step 4: Simplify right side
    15,013.80x = 187,280,458.89
  5. Step 5: Solve for x
    x = 187,280,458.89/15,013.80
  6. Step 6: Final answer
    x = 12,473.89

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1.5x scale

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.