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Finding the Fourth Proportional to 16,865.80, 25,313.10 and 7,520.20

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Solution

The fourth proportional to 16,865.80, 25,313.10 and 7,520.20 is: 11,286.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,865.80 : 25,313.10 = 7,520.20 : x
  2. Step 2: Convert to fraction form
    16,865.80/25,313.10 = 7,520.20/x
  3. Step 3: Cross multiply
    16,865.80x = 25,313.10 × 7,520.20
  4. Step 4: Simplify right side
    16,865.80x = 190,359,574.62
  5. Step 5: Solve for x
    x = 190,359,574.62/16,865.80
  6. Step 6: Final answer
    x = 11,286.72

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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.