Home / 20,505.08-28,297.56-11,552.06

Finding the Fourth Proportional to 20,505.08, 28,297.56 and 11,552.06

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Solution

The fourth proportional to 20,505.08, 28,297.56 and 11,552.06 is: 15,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.08 : 28,297.56 = 11,552.06 : x
  2. Step 2: Convert to fraction form
    20,505.08/28,297.56 = 11,552.06/x
  3. Step 3: Cross multiply
    20,505.08x = 28,297.56 × 11,552.06
  4. Step 4: Simplify right side
    20,505.08x = 326,895,110.97
  5. Step 5: Solve for x
    x = 326,895,110.97/20,505.08
  6. Step 6: Final answer
    x = 15,942.15

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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.