Home / 26,139.60-39,209.40-17,845.20

Finding the Fourth Proportional to 26,139.60, 39,209.40 and 17,845.20

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Solution

The fourth proportional to 26,139.60, 39,209.40 and 17,845.20 is: 26,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,139.60 : 39,209.40 = 17,845.20 : x
  2. Step 2: Convert to fraction form
    26,139.60/39,209.40 = 17,845.20/x
  3. Step 3: Cross multiply
    26,139.60x = 39,209.40 × 17,845.20
  4. Step 4: Simplify right side
    26,139.60x = 699,699,584.88
  5. Step 5: Solve for x
    x = 699,699,584.88/26,139.60
  6. Step 6: Final answer
    x = 26,767.80

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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.