Home / 20,747.92-28,632.72-11,317

Finding the Fourth Proportional to 20,747.92, 28,632.72 and 11,317

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Solution

The fourth proportional to 20,747.92, 28,632.72 and 11,317 is: 15,617.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.92 : 28,632.72 = 11,317 : x
  2. Step 2: Convert to fraction form
    20,747.92/28,632.72 = 11,317/x
  3. Step 3: Cross multiply
    20,747.92x = 28,632.72 × 11,317
  4. Step 4: Simplify right side
    20,747.92x = 324,036,492.24
  5. Step 5: Solve for x
    x = 324,036,492.24/20,747.92
  6. Step 6: Final answer
    x = 15,617.78

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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.