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Finding the Fourth Proportional to 8,963.54, 13,387.98 and 8,117.98

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Solution

The fourth proportional to 8,963.54, 13,387.98 and 8,117.98 is: 12,125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.54 : 13,387.98 = 8,117.98 : x
  2. Step 2: Convert to fraction form
    8,963.54/13,387.98 = 8,117.98/x
  3. Step 3: Cross multiply
    8,963.54x = 13,387.98 × 8,117.98
  4. Step 4: Simplify right side
    8,963.54x = 108,683,320.01
  5. Step 5: Solve for x
    x = 108,683,320.01/8,963.54
  6. Step 6: Final answer
    x = 12,125.04

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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.