Home / 10,981.20-16,458.30-7,471.20

Finding the Fourth Proportional to 10,981.20, 16,458.30 and 7,471.20

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Solution

The fourth proportional to 10,981.20, 16,458.30 and 7,471.20 is: 11,197.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.20 : 16,458.30 = 7,471.20 : x
  2. Step 2: Convert to fraction form
    10,981.20/16,458.30 = 7,471.20/x
  3. Step 3: Cross multiply
    10,981.20x = 16,458.30 × 7,471.20
  4. Step 4: Simplify right side
    10,981.20x = 122,963,250.96
  5. Step 5: Solve for x
    x = 122,963,250.96/10,981.20
  6. Step 6: Final answer
    x = 11,197.62

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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.