Home / 18,722.40-28,087.92-5,575.68

Finding the Fourth Proportional to 18,722.40, 28,087.92 and 5,575.68

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Solution

The fourth proportional to 18,722.40, 28,087.92 and 5,575.68 is: 8,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.40 : 28,087.92 = 5,575.68 : x
  2. Step 2: Convert to fraction form
    18,722.40/28,087.92 = 5,575.68/x
  3. Step 3: Cross multiply
    18,722.40x = 28,087.92 × 5,575.68
  4. Step 4: Simplify right side
    18,722.40x = 156,609,253.79
  5. Step 5: Solve for x
    x = 156,609,253.79/18,722.40
  6. Step 6: Final answer
    x = 8,364.81

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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.