Home / 18,439.98-27,660.12-5,292.78

Finding the Fourth Proportional to 18,439.98, 27,660.12 and 5,292.78

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Solution

The fourth proportional to 18,439.98, 27,660.12 and 5,292.78 is: 7,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.98 : 27,660.12 = 5,292.78 : x
  2. Step 2: Convert to fraction form
    18,439.98/27,660.12 = 5,292.78/x
  3. Step 3: Cross multiply
    18,439.98x = 27,660.12 × 5,292.78
  4. Step 4: Simplify right side
    18,439.98x = 146,398,929.93
  5. Step 5: Solve for x
    x = 146,398,929.93/18,439.98
  6. Step 6: Final answer
    x = 7,939.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.