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Finding the Fourth Proportional to 10,667.76, 16,001.64 and 8,839.92

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Solution

The fourth proportional to 10,667.76, 16,001.64 and 8,839.92 is: 13,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,667.76 : 16,001.64 = 8,839.92 : x
  2. Step 2: Convert to fraction form
    10,667.76/16,001.64 = 8,839.92/x
  3. Step 3: Cross multiply
    10,667.76x = 16,001.64 × 8,839.92
  4. Step 4: Simplify right side
    10,667.76x = 141,453,217.47
  5. Step 5: Solve for x
    x = 141,453,217.47/10,667.76
  6. Step 6: Final answer
    x = 13,259.88

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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.