Home / 10,520.14-15,774.68-3,123.58

Finding the Fourth Proportional to 10,520.14, 15,774.68 and 3,123.58

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Solution

The fourth proportional to 10,520.14, 15,774.68 and 3,123.58 is: 4,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.14 : 15,774.68 = 3,123.58 : x
  2. Step 2: Convert to fraction form
    10,520.14/15,774.68 = 3,123.58/x
  3. Step 3: Cross multiply
    10,520.14x = 15,774.68 × 3,123.58
  4. Step 4: Simplify right side
    10,520.14x = 49,273,474.95
  5. Step 5: Solve for x
    x = 49,273,474.95/10,520.14
  6. Step 6: Final answer
    x = 4,683.73

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1.5x scale

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.