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Finding the Fourth Proportional to 8,912.64, 13,332.02 and 8,100.71

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Solution

The fourth proportional to 8,912.64, 13,332.02 and 8,100.71 is: 12,117.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.64 : 13,332.02 = 8,100.71 : x
  2. Step 2: Convert to fraction form
    8,912.64/13,332.02 = 8,100.71/x
  3. Step 3: Cross multiply
    8,912.64x = 13,332.02 × 8,100.71
  4. Step 4: Simplify right side
    8,912.64x = 107,998,827.73
  5. Step 5: Solve for x
    x = 107,998,827.73/8,912.64
  6. Step 6: Final answer
    x = 12,117.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.