Home / 20,531.78-30,796.13-5,741.86

Finding the Fourth Proportional to 20,531.78, 30,796.13 and 5,741.86

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Solution

The fourth proportional to 20,531.78, 30,796.13 and 5,741.86 is: 8,612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.78 : 30,796.13 = 5,741.86 : x
  2. Step 2: Convert to fraction form
    20,531.78/30,796.13 = 5,741.86/x
  3. Step 3: Cross multiply
    20,531.78x = 30,796.13 × 5,741.86
  4. Step 4: Simplify right side
    20,531.78x = 176,826,913.02
  5. Step 5: Solve for x
    x = 176,826,913.02/20,531.78
  6. Step 6: Final answer
    x = 8,612.35

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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.