Home / 20,456.67-28,230.24-11,504.12

Finding the Fourth Proportional to 20,456.67, 28,230.24 and 11,504.12

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Solution

The fourth proportional to 20,456.67, 28,230.24 and 11,504.12 is: 15,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.67 : 28,230.24 = 11,504.12 : x
  2. Step 2: Convert to fraction form
    20,456.67/28,230.24 = 11,504.12/x
  3. Step 3: Cross multiply
    20,456.67x = 28,230.24 × 11,504.12
  4. Step 4: Simplify right side
    20,456.67x = 324,763,927.44
  5. Step 5: Solve for x
    x = 324,763,927.44/20,456.67
  6. Step 6: Final answer
    x = 15,875.70

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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.