Home / 26,617.60-39,878.40-15,515.20

Finding the Fourth Proportional to 26,617.60, 39,878.40 and 15,515.20

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Solution

The fourth proportional to 26,617.60, 39,878.40 and 15,515.20 is: 23,244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,617.60 : 39,878.40 = 15,515.20 : x
  2. Step 2: Convert to fraction form
    26,617.60/39,878.40 = 15,515.20/x
  3. Step 3: Cross multiply
    26,617.60x = 39,878.40 × 15,515.20
  4. Step 4: Simplify right side
    26,617.60x = 618,721,351.68
  5. Step 5: Solve for x
    x = 618,721,351.68/26,617.60
  6. Step 6: Final answer
    x = 23,244.82

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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.