Home / 13,605.18-20,405.42-3,742.11

Finding the Fourth Proportional to 13,605.18, 20,405.42 and 3,742.11

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Solution

The fourth proportional to 13,605.18, 20,405.42 and 3,742.11 is: 5,612.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.18 : 20,405.42 = 3,742.11 : x
  2. Step 2: Convert to fraction form
    13,605.18/20,405.42 = 3,742.11/x
  3. Step 3: Cross multiply
    13,605.18x = 20,405.42 × 3,742.11
  4. Step 4: Simplify right side
    13,605.18x = 76,359,307.53
  5. Step 5: Solve for x
    x = 76,359,307.53/13,605.18
  6. Step 6: Final answer
    x = 5,612.52

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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.