Home / 13,411.68-20,121.60-4,177.76

Finding the Fourth Proportional to 13,411.68, 20,121.60 and 4,177.76

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Solution

The fourth proportional to 13,411.68, 20,121.60 and 4,177.76 is: 6,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.68 : 20,121.60 = 4,177.76 : x
  2. Step 2: Convert to fraction form
    13,411.68/20,121.60 = 4,177.76/x
  3. Step 3: Cross multiply
    13,411.68x = 20,121.60 × 4,177.76
  4. Step 4: Simplify right side
    13,411.68x = 84,063,215.62
  5. Step 5: Solve for x
    x = 84,063,215.62/13,411.68
  6. Step 6: Final answer
    x = 6,267.91

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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.