Home / 26,620.80-39,931.20-6,899.20

Finding the Fourth Proportional to 26,620.80, 39,931.20 and 6,899.20

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Solution

The fourth proportional to 26,620.80, 39,931.20 and 6,899.20 is: 10,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,620.80 : 39,931.20 = 6,899.20 : x
  2. Step 2: Convert to fraction form
    26,620.80/39,931.20 = 6,899.20/x
  3. Step 3: Cross multiply
    26,620.80x = 39,931.20 × 6,899.20
  4. Step 4: Simplify right side
    26,620.80x = 275,493,335.04
  5. Step 5: Solve for x
    x = 275,493,335.04/26,620.80
  6. Step 6: Final answer
    x = 10,348.80

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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.