Home / 26,615.20-39,922.80-18,839.20

Finding the Fourth Proportional to 26,615.20, 39,922.80 and 18,839.20

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Solution

The fourth proportional to 26,615.20, 39,922.80 and 18,839.20 is: 28,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,615.20 : 39,922.80 = 18,839.20 : x
  2. Step 2: Convert to fraction form
    26,615.20/39,922.80 = 18,839.20/x
  3. Step 3: Cross multiply
    26,615.20x = 39,922.80 × 18,839.20
  4. Step 4: Simplify right side
    26,615.20x = 752,113,613.76
  5. Step 5: Solve for x
    x = 752,113,613.76/26,615.20
  6. Step 6: Final answer
    x = 28,258.80

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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.