Home / 13,902.38-20,861.54-13,789.53

Finding the Fourth Proportional to 13,902.38, 20,861.54 and 13,789.53

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Solution

The fourth proportional to 13,902.38, 20,861.54 and 13,789.53 is: 20,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.38 : 20,861.54 = 13,789.53 : x
  2. Step 2: Convert to fraction form
    13,902.38/20,861.54 = 13,789.53/x
  3. Step 3: Cross multiply
    13,902.38x = 20,861.54 × 13,789.53
  4. Step 4: Simplify right side
    13,902.38x = 287,670,866.15
  5. Step 5: Solve for x
    x = 287,670,866.15/13,902.38
  6. Step 6: Final answer
    x = 20,692.21

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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.