Home / 18,213.46-25,130.12-12,151.76

Finding the Fourth Proportional to 18,213.46, 25,130.12 and 12,151.76

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Solution

The fourth proportional to 18,213.46, 25,130.12 and 12,151.76 is: 16,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.46 : 25,130.12 = 12,151.76 : x
  2. Step 2: Convert to fraction form
    18,213.46/25,130.12 = 12,151.76/x
  3. Step 3: Cross multiply
    18,213.46x = 25,130.12 × 12,151.76
  4. Step 4: Simplify right side
    18,213.46x = 305,375,000.60
  5. Step 5: Solve for x
    x = 305,375,000.60/18,213.46
  6. Step 6: Final answer
    x = 16,766.45

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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.