Home / 15,121.80-22,679.46-4,727.88

Finding the Fourth Proportional to 15,121.80, 22,679.46 and 4,727.88

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Solution

The fourth proportional to 15,121.80, 22,679.46 and 4,727.88 is: 7,090.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.80 : 22,679.46 = 4,727.88 : x
  2. Step 2: Convert to fraction form
    15,121.80/22,679.46 = 4,727.88/x
  3. Step 3: Cross multiply
    15,121.80x = 22,679.46 × 4,727.88
  4. Step 4: Simplify right side
    15,121.80x = 107,225,765.34
  5. Step 5: Solve for x
    x = 107,225,765.34/15,121.80
  6. Step 6: Final answer
    x = 7,090.81

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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.