Home / 28,535.76-39,378.60-15,961.68

Finding the Fourth Proportional to 28,535.76, 39,378.60 and 15,961.68

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Solution

The fourth proportional to 28,535.76, 39,378.60 and 15,961.68 is: 22,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.76 : 39,378.60 = 15,961.68 : x
  2. Step 2: Convert to fraction form
    28,535.76/39,378.60 = 15,961.68/x
  3. Step 3: Cross multiply
    28,535.76x = 39,378.60 × 15,961.68
  4. Step 4: Simplify right side
    28,535.76x = 628,548,612.05
  5. Step 5: Solve for x
    x = 628,548,612.05/28,535.76
  6. Step 6: Final answer
    x = 22,026.70

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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.