Home / 15,195.98-20,986.62-11,572.18

Finding the Fourth Proportional to 15,195.98, 20,986.62 and 11,572.18

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Solution

The fourth proportional to 15,195.98, 20,986.62 and 11,572.18 is: 15,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.98 : 20,986.62 = 11,572.18 : x
  2. Step 2: Convert to fraction form
    15,195.98/20,986.62 = 11,572.18/x
  3. Step 3: Cross multiply
    15,195.98x = 20,986.62 × 11,572.18
  4. Step 4: Simplify right side
    15,195.98x = 242,860,839.30
  5. Step 5: Solve for x
    x = 242,860,839.30/15,195.98
  6. Step 6: Final answer
    x = 15,981.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.