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Finding the Fourth Proportional to 16,004.80, 22,087.68 and 8,931.20

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Solution

The fourth proportional to 16,004.80, 22,087.68 and 8,931.20 is: 12,325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,004.80 : 22,087.68 = 8,931.20 : x
  2. Step 2: Convert to fraction form
    16,004.80/22,087.68 = 8,931.20/x
  3. Step 3: Cross multiply
    16,004.80x = 22,087.68 × 8,931.20
  4. Step 4: Simplify right side
    16,004.80x = 197,269,487.62
  5. Step 5: Solve for x
    x = 197,269,487.62/16,004.80
  6. Step 6: Final answer
    x = 12,325.65

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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.