Home / 20,391.91-30,538.65-11,600.17

Finding the Fourth Proportional to 20,391.91, 30,538.65 and 11,600.17

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Solution

The fourth proportional to 20,391.91, 30,538.65 and 11,600.17 is: 17,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.91 : 30,538.65 = 11,600.17 : x
  2. Step 2: Convert to fraction form
    20,391.91/30,538.65 = 11,600.17/x
  3. Step 3: Cross multiply
    20,391.91x = 30,538.65 × 11,600.17
  4. Step 4: Simplify right side
    20,391.91x = 354,253,378.88
  5. Step 5: Solve for x
    x = 354,253,378.88/20,391.91
  6. Step 6: Final answer
    x = 17,372.26

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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.