Home / 28,521.28-39,361.44-15,945.22

Finding the Fourth Proportional to 28,521.28, 39,361.44 and 15,945.22

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Solution

The fourth proportional to 28,521.28, 39,361.44 and 15,945.22 is: 22,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.28 : 39,361.44 = 15,945.22 : x
  2. Step 2: Convert to fraction form
    28,521.28/39,361.44 = 15,945.22/x
  3. Step 3: Cross multiply
    28,521.28x = 39,361.44 × 15,945.22
  4. Step 4: Simplify right side
    28,521.28x = 627,626,820.32
  5. Step 5: Solve for x
    x = 627,626,820.32/28,521.28
  6. Step 6: Final answer
    x = 22,005.56

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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.