Home / 26,155.20-39,232.80-8,620.80

Finding the Fourth Proportional to 26,155.20, 39,232.80 and 8,620.80

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Solution

The fourth proportional to 26,155.20, 39,232.80 and 8,620.80 is: 12,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,155.20 : 39,232.80 = 8,620.80 : x
  2. Step 2: Convert to fraction form
    26,155.20/39,232.80 = 8,620.80/x
  3. Step 3: Cross multiply
    26,155.20x = 39,232.80 × 8,620.80
  4. Step 4: Simplify right side
    26,155.20x = 338,218,122.24
  5. Step 5: Solve for x
    x = 338,218,122.24/26,155.20
  6. Step 6: Final answer
    x = 12,931.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.