Home / 18,724.31-28,076.22-12,807.92

Finding the Fourth Proportional to 18,724.31, 28,076.22 and 12,807.92

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Solution

The fourth proportional to 18,724.31, 28,076.22 and 12,807.92 is: 19,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.31 : 28,076.22 = 12,807.92 : x
  2. Step 2: Convert to fraction form
    18,724.31/28,076.22 = 12,807.92/x
  3. Step 3: Cross multiply
    18,724.31x = 28,076.22 × 12,807.92
  4. Step 4: Simplify right side
    18,724.31x = 359,598,049.85
  5. Step 5: Solve for x
    x = 359,598,049.85/18,724.31
  6. Step 6: Final answer
    x = 19,204.87

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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.