Home / 20,294.31-28,003.73-11,218.45

Finding the Fourth Proportional to 20,294.31, 28,003.73 and 11,218.45

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Solution

The fourth proportional to 20,294.31, 28,003.73 and 11,218.45 is: 15,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.31 : 28,003.73 = 11,218.45 : x
  2. Step 2: Convert to fraction form
    20,294.31/28,003.73 = 11,218.45/x
  3. Step 3: Cross multiply
    20,294.31x = 28,003.73 × 11,218.45
  4. Step 4: Simplify right side
    20,294.31x = 314,158,470.94
  5. Step 5: Solve for x
    x = 314,158,470.94/20,294.31
  6. Step 6: Final answer
    x = 15,480.12

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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.