Home / 8,721.68-13,077.60-4,104.80

Finding the Fourth Proportional to 8,721.68, 13,077.60 and 4,104.80

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Solution

The fourth proportional to 8,721.68, 13,077.60 and 4,104.80 is: 6,154.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.68 : 13,077.60 = 4,104.80 : x
  2. Step 2: Convert to fraction form
    8,721.68/13,077.60 = 4,104.80/x
  3. Step 3: Cross multiply
    8,721.68x = 13,077.60 × 4,104.80
  4. Step 4: Simplify right side
    8,721.68x = 53,680,932.48
  5. Step 5: Solve for x
    x = 53,680,932.48/8,721.68
  6. Step 6: Final answer
    x = 6,154.88

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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.