Home / 18,439.91-25,443.48-10,480.78

Finding the Fourth Proportional to 18,439.91, 25,443.48 and 10,480.78

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Solution

The fourth proportional to 18,439.91, 25,443.48 and 10,480.78 is: 14,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.91 : 25,443.48 = 10,480.78 : x
  2. Step 2: Convert to fraction form
    18,439.91/25,443.48 = 10,480.78/x
  3. Step 3: Cross multiply
    18,439.91x = 25,443.48 × 10,480.78
  4. Step 4: Simplify right side
    18,439.91x = 266,667,516.31
  5. Step 5: Solve for x
    x = 266,667,516.31/18,439.91
  6. Step 6: Final answer
    x = 14,461.43

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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.