Home / 20,278.92-27,983.09-11,325.18

Finding the Fourth Proportional to 20,278.92, 27,983.09 and 11,325.18

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Solution

The fourth proportional to 20,278.92, 27,983.09 and 11,325.18 is: 15,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.92 : 27,983.09 = 11,325.18 : x
  2. Step 2: Convert to fraction form
    20,278.92/27,983.09 = 11,325.18/x
  3. Step 3: Cross multiply
    20,278.92x = 27,983.09 × 11,325.18
  4. Step 4: Simplify right side
    20,278.92x = 316,913,474.58
  5. Step 5: Solve for x
    x = 316,913,474.58/20,278.92
  6. Step 6: Final answer
    x = 15,627.73

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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.