Home / 20,474.03-28,254.44-11,981.12

Finding the Fourth Proportional to 20,474.03, 28,254.44 and 11,981.12

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Solution

The fourth proportional to 20,474.03, 28,254.44 and 11,981.12 is: 16,534.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.03 : 28,254.44 = 11,981.12 : x
  2. Step 2: Convert to fraction form
    20,474.03/28,254.44 = 11,981.12/x
  3. Step 3: Cross multiply
    20,474.03x = 28,254.44 × 11,981.12
  4. Step 4: Simplify right side
    20,474.03x = 338,519,861.53
  5. Step 5: Solve for x
    x = 338,519,861.53/20,474.03
  6. Step 6: Final answer
    x = 16,534.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.