Home / 22,128.80-30,535.20-13,175.04

Finding the Fourth Proportional to 22,128.80, 30,535.20 and 13,175.04

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Solution

The fourth proportional to 22,128.80, 30,535.20 and 13,175.04 is: 18,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,128.80 : 30,535.20 = 13,175.04 : x
  2. Step 2: Convert to fraction form
    22,128.80/30,535.20 = 13,175.04/x
  3. Step 3: Cross multiply
    22,128.80x = 30,535.20 × 13,175.04
  4. Step 4: Simplify right side
    22,128.80x = 402,302,481.41
  5. Step 5: Solve for x
    x = 402,302,481.41/22,128.80
  6. Step 6: Final answer
    x = 18,180.04

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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.