Home / 13,842.31-20,766.20-5,077.30

Finding the Fourth Proportional to 13,842.31, 20,766.20 and 5,077.30

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Solution

The fourth proportional to 13,842.31, 20,766.20 and 5,077.30 is: 7,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.31 : 20,766.20 = 5,077.30 : x
  2. Step 2: Convert to fraction form
    13,842.31/20,766.20 = 5,077.30/x
  3. Step 3: Cross multiply
    13,842.31x = 20,766.20 × 5,077.30
  4. Step 4: Simplify right side
    13,842.31x = 105,436,188.89
  5. Step 5: Solve for x
    x = 105,436,188.89/13,842.31
  6. Step 6: Final answer
    x = 7,616.95

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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.