Home / 20,505.48-28,297.56-11,074.04

Finding the Fourth Proportional to 20,505.48, 28,297.56 and 11,074.04

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Solution

The fourth proportional to 20,505.48, 28,297.56 and 11,074.04 is: 15,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.48 : 28,297.56 = 11,074.04 : x
  2. Step 2: Convert to fraction form
    20,505.48/28,297.56 = 11,074.04/x
  3. Step 3: Cross multiply
    20,505.48x = 28,297.56 × 11,074.04
  4. Step 4: Simplify right side
    20,505.48x = 313,368,311.34
  5. Step 5: Solve for x
    x = 313,368,311.34/20,505.48
  6. Step 6: Final answer
    x = 15,282.17

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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.