Home / 18,441.76-25,441.52-12,471.28

Finding the Fourth Proportional to 18,441.76, 25,441.52 and 12,471.28

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Solution

The fourth proportional to 18,441.76, 25,441.52 and 12,471.28 is: 17,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441.76 : 25,441.52 = 12,471.28 : x
  2. Step 2: Convert to fraction form
    18,441.76/25,441.52 = 12,471.28/x
  3. Step 3: Cross multiply
    18,441.76x = 25,441.52 × 12,471.28
  4. Step 4: Simplify right side
    18,441.76x = 317,288,319.55
  5. Step 5: Solve for x
    x = 317,288,319.55/18,441.76
  6. Step 6: Final answer
    x = 17,204.88

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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.