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Finding the Fourth Proportional to 8,954.43, 12,320.96 and 8,725.47

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Solution

The fourth proportional to 8,954.43, 12,320.96 and 8,725.47 is: 12,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,954.43 : 12,320.96 = 8,725.47 : x
  2. Step 2: Convert to fraction form
    8,954.43/12,320.96 = 8,725.47/x
  3. Step 3: Cross multiply
    8,954.43x = 12,320.96 × 8,725.47
  4. Step 4: Simplify right side
    8,954.43x = 107,506,123.22
  5. Step 5: Solve for x
    x = 107,506,123.22/8,954.43
  6. Step 6: Final answer
    x = 12,005.91

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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.