Home / 20,612.17-28,444.86-11,180.80

Finding the Fourth Proportional to 20,612.17, 28,444.86 and 11,180.80

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Solution

The fourth proportional to 20,612.17, 28,444.86 and 11,180.80 is: 15,429.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.17 : 28,444.86 = 11,180.80 : x
  2. Step 2: Convert to fraction form
    20,612.17/28,444.86 = 11,180.80/x
  3. Step 3: Cross multiply
    20,612.17x = 28,444.86 × 11,180.80
  4. Step 4: Simplify right side
    20,612.17x = 318,036,092.56
  5. Step 5: Solve for x
    x = 318,036,092.56/20,612.17
  6. Step 6: Final answer
    x = 15,429.53

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