Home / 13,695.75-20,554.56-7,123.95

Finding the Fourth Proportional to 13,695.75, 20,554.56 and 7,123.95

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Solution

The fourth proportional to 13,695.75, 20,554.56 and 7,123.95 is: 10,691.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.75 : 20,554.56 = 7,123.95 : x
  2. Step 2: Convert to fraction form
    13,695.75/20,554.56 = 7,123.95/x
  3. Step 3: Cross multiply
    13,695.75x = 20,554.56 × 7,123.95
  4. Step 4: Simplify right side
    13,695.75x = 146,429,657.71
  5. Step 5: Solve for x
    x = 146,429,657.71/13,695.75
  6. Step 6: Final answer
    x = 10,691.61

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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.