Home / 20,591.92-28,416.93-11,160.49

Finding the Fourth Proportional to 20,591.92, 28,416.93 and 11,160.49

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Solution

The fourth proportional to 20,591.92, 28,416.93 and 11,160.49 is: 15,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.92 : 28,416.93 = 11,160.49 : x
  2. Step 2: Convert to fraction form
    20,591.92/28,416.93 = 11,160.49/x
  3. Step 3: Cross multiply
    20,591.92x = 28,416.93 × 11,160.49
  4. Step 4: Simplify right side
    20,591.92x = 317,146,863.10
  5. Step 5: Solve for x
    x = 317,146,863.10/20,591.92
  6. Step 6: Final answer
    x = 15,401.52

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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.