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Finding the Fourth Proportional to 9,718.67, 14,502.17 and 8,671.47

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Solution

The fourth proportional to 9,718.67, 14,502.17 and 8,671.47 is: 12,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,718.67 : 14,502.17 = 8,671.47 : x
  2. Step 2: Convert to fraction form
    9,718.67/14,502.17 = 8,671.47/x
  3. Step 3: Cross multiply
    9,718.67x = 14,502.17 × 8,671.47
  4. Step 4: Simplify right side
    9,718.67x = 125,755,059.58
  5. Step 5: Solve for x
    x = 125,755,059.58/9,718.67
  6. Step 6: Final answer
    x = 12,939.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.