Home / 18,631.28-25,710.64-10,247.78

Finding the Fourth Proportional to 18,631.28, 25,710.64 and 10,247.78

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Solution

The fourth proportional to 18,631.28, 25,710.64 and 10,247.78 is: 14,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.28 : 25,710.64 = 10,247.78 : x
  2. Step 2: Convert to fraction form
    18,631.28/25,710.64 = 10,247.78/x
  3. Step 3: Cross multiply
    18,631.28x = 25,710.64 × 10,247.78
  4. Step 4: Simplify right side
    18,631.28x = 263,476,982.38
  5. Step 5: Solve for x
    x = 263,476,982.38/18,631.28
  6. Step 6: Final answer
    x = 14,141.65

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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.