Home / 10,989.28-16,476.60-5,711.32

Finding the Fourth Proportional to 10,989.28, 16,476.60 and 5,711.32

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Solution

The fourth proportional to 10,989.28, 16,476.60 and 5,711.32 is: 8,563.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.28 : 16,476.60 = 5,711.32 : x
  2. Step 2: Convert to fraction form
    10,989.28/16,476.60 = 5,711.32/x
  3. Step 3: Cross multiply
    10,989.28x = 16,476.60 × 5,711.32
  4. Step 4: Simplify right side
    10,989.28x = 94,103,135.11
  5. Step 5: Solve for x
    x = 94,103,135.11/10,989.28
  6. Step 6: Final answer
    x = 8,563.18

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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.