Home / 13,687.74-20,522.40-7,442.46

Finding the Fourth Proportional to 13,687.74, 20,522.40 and 7,442.46

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Solution

The fourth proportional to 13,687.74, 20,522.40 and 7,442.46 is: 11,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.74 : 20,522.40 = 7,442.46 : x
  2. Step 2: Convert to fraction form
    13,687.74/20,522.40 = 7,442.46/x
  3. Step 3: Cross multiply
    13,687.74x = 20,522.40 × 7,442.46
  4. Step 4: Simplify right side
    13,687.74x = 152,737,141.10
  5. Step 5: Solve for x
    x = 152,737,141.10/13,687.74
  6. Step 6: Final answer
    x = 11,158.68

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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.