Home / 20,845.67-28,767.75-11,414.30

Finding the Fourth Proportional to 20,845.67, 28,767.75 and 11,414.30

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Solution

The fourth proportional to 20,845.67, 28,767.75 and 11,414.30 is: 15,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.67 : 28,767.75 = 11,414.30 : x
  2. Step 2: Convert to fraction form
    20,845.67/28,767.75 = 11,414.30/x
  3. Step 3: Cross multiply
    20,845.67x = 28,767.75 × 11,414.30
  4. Step 4: Simplify right side
    20,845.67x = 328,363,728.83
  5. Step 5: Solve for x
    x = 328,363,728.83/20,845.67
  6. Step 6: Final answer
    x = 15,752.13

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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.