Home / 18,443.28-25,453.89-10,486.70

Finding the Fourth Proportional to 18,443.28, 25,453.89 and 10,486.70

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Solution

The fourth proportional to 18,443.28, 25,453.89 and 10,486.70 is: 14,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.28 : 25,453.89 = 10,486.70 : x
  2. Step 2: Convert to fraction form
    18,443.28/25,453.89 = 10,486.70/x
  3. Step 3: Cross multiply
    18,443.28x = 25,453.89 × 10,486.70
  4. Step 4: Simplify right side
    18,443.28x = 266,927,282.05
  5. Step 5: Solve for x
    x = 266,927,282.05/18,443.28
  6. Step 6: Final answer
    x = 14,472.88

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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.