Home / 13,680.18-20,558.75-8,134.52

Finding the Fourth Proportional to 13,680.18, 20,558.75 and 8,134.52

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Solution

The fourth proportional to 13,680.18, 20,558.75 and 8,134.52 is: 12,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.18 : 20,558.75 = 8,134.52 : x
  2. Step 2: Convert to fraction form
    13,680.18/20,558.75 = 8,134.52/x
  3. Step 3: Cross multiply
    13,680.18x = 20,558.75 × 8,134.52
  4. Step 4: Simplify right side
    13,680.18x = 167,235,419.58
  5. Step 5: Solve for x
    x = 167,235,419.58/13,680.18
  6. Step 6: Final answer
    x = 12,224.65

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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.