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Finding the Fourth Proportional to 15,014.74, 20,712.14 and 9,042.78

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Solution

The fourth proportional to 15,014.74, 20,712.14 and 9,042.78 is: 12,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.74 : 20,712.14 = 9,042.78 : x
  2. Step 2: Convert to fraction form
    15,014.74/20,712.14 = 9,042.78/x
  3. Step 3: Cross multiply
    15,014.74x = 20,712.14 × 9,042.78
  4. Step 4: Simplify right side
    15,014.74x = 187,295,325.35
  5. Step 5: Solve for x
    x = 187,295,325.35/15,014.74
  6. Step 6: Final answer
    x = 12,474.10

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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.