Home / 20,543.76-30,787.56-11,171.52

Finding the Fourth Proportional to 20,543.76, 30,787.56 and 11,171.52

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Solution

The fourth proportional to 20,543.76, 30,787.56 and 11,171.52 is: 16,742.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.76 : 30,787.56 = 11,171.52 : x
  2. Step 2: Convert to fraction form
    20,543.76/30,787.56 = 11,171.52/x
  3. Step 3: Cross multiply
    20,543.76x = 30,787.56 × 11,171.52
  4. Step 4: Simplify right side
    20,543.76x = 343,943,842.29
  5. Step 5: Solve for x
    x = 343,943,842.29/20,543.76
  6. Step 6: Final answer
    x = 16,742.01

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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.