Home / 18,126.54-27,154.42-12,490.92

Finding the Fourth Proportional to 18,126.54, 27,154.42 and 12,490.92

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Solution

The fourth proportional to 18,126.54, 27,154.42 and 12,490.92 is: 18,711.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.54 : 27,154.42 = 12,490.92 : x
  2. Step 2: Convert to fraction form
    18,126.54/27,154.42 = 12,490.92/x
  3. Step 3: Cross multiply
    18,126.54x = 27,154.42 × 12,490.92
  4. Step 4: Simplify right side
    18,126.54x = 339,183,656.64
  5. Step 5: Solve for x
    x = 339,183,656.64/18,126.54
  6. Step 6: Final answer
    x = 18,711.99

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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.