Home / 28,535.76-39,380.20-15,615.82

Finding the Fourth Proportional to 28,535.76, 39,380.20 and 15,615.82

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Solution

The fourth proportional to 28,535.76, 39,380.20 and 15,615.82 is: 21,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.76 : 39,380.20 = 15,615.82 : x
  2. Step 2: Convert to fraction form
    28,535.76/39,380.20 = 15,615.82/x
  3. Step 3: Cross multiply
    28,535.76x = 39,380.20 × 15,615.82
  4. Step 4: Simplify right side
    28,535.76x = 614,954,114.76
  5. Step 5: Solve for x
    x = 614,954,114.76/28,535.76
  6. Step 6: Final answer
    x = 21,550.30

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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.