Home / 38,128.38-52,617.77-21,361.38

Finding the Fourth Proportional to 38,128.38, 52,617.77 and 21,361.38

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Solution

The fourth proportional to 38,128.38, 52,617.77 and 21,361.38 is: 29,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.38 : 52,617.77 = 21,361.38 : x
  2. Step 2: Convert to fraction form
    38,128.38/52,617.77 = 21,361.38/x
  3. Step 3: Cross multiply
    38,128.38x = 52,617.77 × 21,361.38
  4. Step 4: Simplify right side
    38,128.38x = 1,123,988,179.72
  5. Step 5: Solve for x
    x = 1,123,988,179.72/38,128.38
  6. Step 6: Final answer
    x = 29,479.04

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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.