Home / 18,711.24-28,068.05-7,611.86

Finding the Fourth Proportional to 18,711.24, 28,068.05 and 7,611.86

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Solution

The fourth proportional to 18,711.24, 28,068.05 and 7,611.86 is: 11,418.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.24 : 28,068.05 = 7,611.86 : x
  2. Step 2: Convert to fraction form
    18,711.24/28,068.05 = 7,611.86/x
  3. Step 3: Cross multiply
    18,711.24x = 28,068.05 × 7,611.86
  4. Step 4: Simplify right side
    18,711.24x = 213,649,888.67
  5. Step 5: Solve for x
    x = 213,649,888.67/18,711.24
  6. Step 6: Final answer
    x = 11,418.26

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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.