Home / 20,232.79-27,919.94-11,279.76

Finding the Fourth Proportional to 20,232.79, 27,919.94 and 11,279.76

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Solution

The fourth proportional to 20,232.79, 27,919.94 and 11,279.76 is: 15,565.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,232.79 : 27,919.94 = 11,279.76 : x
  2. Step 2: Convert to fraction form
    20,232.79/27,919.94 = 11,279.76/x
  3. Step 3: Cross multiply
    20,232.79x = 27,919.94 × 11,279.76
  4. Step 4: Simplify right side
    20,232.79x = 314,930,124.76
  5. Step 5: Solve for x
    x = 314,930,124.76/20,232.79
  6. Step 6: Final answer
    x = 15,565.34

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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.