Home / 20,591.92-28,416.78-11,160.46

Finding the Fourth Proportional to 20,591.92, 28,416.78 and 11,160.46

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Solution

The fourth proportional to 20,591.92, 28,416.78 and 11,160.46 is: 15,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.92 : 28,416.78 = 11,160.46 : x
  2. Step 2: Convert to fraction form
    20,591.92/28,416.78 = 11,160.46/x
  3. Step 3: Cross multiply
    20,591.92x = 28,416.78 × 11,160.46
  4. Step 4: Simplify right side
    20,591.92x = 317,144,336.52
  5. Step 5: Solve for x
    x = 317,144,336.52/20,591.92
  6. Step 6: Final answer
    x = 15,401.40

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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.