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Finding the Fourth Proportional to 12,061.46, 18,174.35 and 9,918.20

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Solution

The fourth proportional to 12,061.46, 18,174.35 and 9,918.20 is: 14,944.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,061.46 : 18,174.35 = 9,918.20 : x
  2. Step 2: Convert to fraction form
    12,061.46/18,174.35 = 9,918.20/x
  3. Step 3: Cross multiply
    12,061.46x = 18,174.35 × 9,918.20
  4. Step 4: Simplify right side
    12,061.46x = 180,256,838.17
  5. Step 5: Solve for x
    x = 180,256,838.17/12,061.46
  6. Step 6: Final answer
    x = 14,944.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.