Home / 18,631.28-25,712.88-10,674.20

Finding the Fourth Proportional to 18,631.28, 25,712.88 and 10,674.20

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Solution

The fourth proportional to 18,631.28, 25,712.88 and 10,674.20 is: 14,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.28 : 25,712.88 = 10,674.20 : x
  2. Step 2: Convert to fraction form
    18,631.28/25,712.88 = 10,674.20/x
  3. Step 3: Cross multiply
    18,631.28x = 25,712.88 × 10,674.20
  4. Step 4: Simplify right side
    18,631.28x = 274,464,423.70
  5. Step 5: Solve for x
    x = 274,464,423.70/18,631.28
  6. Step 6: Final answer
    x = 14,731.38

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Similar ratio
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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.