Home / 20,996.33-28,974.34-11,436.00

Finding the Fourth Proportional to 20,996.33, 28,974.34 and 11,436.00

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Solution

The fourth proportional to 20,996.33, 28,974.34 and 11,436.00 is: 15,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.33 : 28,974.34 = 11,436.00 : x
  2. Step 2: Convert to fraction form
    20,996.33/28,974.34 = 11,436.00/x
  3. Step 3: Cross multiply
    20,996.33x = 28,974.34 × 11,436.00
  4. Step 4: Simplify right side
    20,996.33x = 331,350,350.19
  5. Step 5: Solve for x
    x = 331,350,350.19/20,996.33
  6. Step 6: Final answer
    x = 15,781.35

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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.