Home / 20,363.97-28,101.81-11,865.56

Finding the Fourth Proportional to 20,363.97, 28,101.81 and 11,865.56

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Solution

The fourth proportional to 20,363.97, 28,101.81 and 11,865.56 is: 16,374.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.97 : 28,101.81 = 11,865.56 : x
  2. Step 2: Convert to fraction form
    20,363.97/28,101.81 = 11,865.56/x
  3. Step 3: Cross multiply
    20,363.97x = 28,101.81 × 11,865.56
  4. Step 4: Simplify right side
    20,363.97x = 333,443,616.65
  5. Step 5: Solve for x
    x = 333,443,616.65/20,363.97
  6. Step 6: Final answer
    x = 16,374.19

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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.