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Finding the Fourth Proportional to 12,404.88, 18,680.70 and 8,966.16

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Solution

The fourth proportional to 12,404.88, 18,680.70 and 8,966.16 is: 13,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.88 : 18,680.70 = 8,966.16 : x
  2. Step 2: Convert to fraction form
    12,404.88/18,680.70 = 8,966.16/x
  3. Step 3: Cross multiply
    12,404.88x = 18,680.70 × 8,966.16
  4. Step 4: Simplify right side
    12,404.88x = 167,494,145.11
  5. Step 5: Solve for x
    x = 167,494,145.11/12,404.88
  6. Step 6: Final answer
    x = 13,502.28

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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.