Home / 20,818.18-28,727.35-11,743.04

Finding the Fourth Proportional to 20,818.18, 28,727.35 and 11,743.04

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Solution

The fourth proportional to 20,818.18, 28,727.35 and 11,743.04 is: 16,204.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.18 : 28,727.35 = 11,743.04 : x
  2. Step 2: Convert to fraction form
    20,818.18/28,727.35 = 11,743.04/x
  3. Step 3: Cross multiply
    20,818.18x = 28,727.35 × 11,743.04
  4. Step 4: Simplify right side
    20,818.18x = 337,346,420.14
  5. Step 5: Solve for x
    x = 337,346,420.14/20,818.18
  6. Step 6: Final answer
    x = 16,204.41

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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.