Home / 15,168.86-22,738.57-7,776.80

Finding the Fourth Proportional to 15,168.86, 22,738.57 and 7,776.80

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Solution

The fourth proportional to 15,168.86, 22,738.57 and 7,776.80 is: 11,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.86 : 22,738.57 = 7,776.80 : x
  2. Step 2: Convert to fraction form
    15,168.86/22,738.57 = 7,776.80/x
  3. Step 3: Cross multiply
    15,168.86x = 22,738.57 × 7,776.80
  4. Step 4: Simplify right side
    15,168.86x = 176,833,311.18
  5. Step 5: Solve for x
    x = 176,833,311.18/15,168.86
  6. Step 6: Final answer
    x = 11,657.65

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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.