Home / 28,522.80-39,360.60-15,947.28

Finding the Fourth Proportional to 28,522.80, 39,360.60 and 15,947.28

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Solution

The fourth proportional to 28,522.80, 39,360.60 and 15,947.28 is: 22,006.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.80 : 39,360.60 = 15,947.28 : x
  2. Step 2: Convert to fraction form
    28,522.80/39,360.60 = 15,947.28/x
  3. Step 3: Cross multiply
    28,522.80x = 39,360.60 × 15,947.28
  4. Step 4: Simplify right side
    28,522.80x = 627,694,509.17
  5. Step 5: Solve for x
    x = 627,694,509.17/28,522.80
  6. Step 6: Final answer
    x = 22,006.76

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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.