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Finding the Fourth Proportional to 10,891.76, 16,359.24 and 9,331.16

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Solution

The fourth proportional to 10,891.76, 16,359.24 and 9,331.16 is: 14,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.76 : 16,359.24 = 9,331.16 : x
  2. Step 2: Convert to fraction form
    10,891.76/16,359.24 = 9,331.16/x
  3. Step 3: Cross multiply
    10,891.76x = 16,359.24 × 9,331.16
  4. Step 4: Simplify right side
    10,891.76x = 152,650,685.92
  5. Step 5: Solve for x
    x = 152,650,685.92/10,891.76
  6. Step 6: Final answer
    x = 14,015.25

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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.