Home / 26,648.80-39,908.40-12,781.60

Finding the Fourth Proportional to 26,648.80, 39,908.40 and 12,781.60

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Solution

The fourth proportional to 26,648.80, 39,908.40 and 12,781.60 is: 19,141.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,648.80 : 39,908.40 = 12,781.60 : x
  2. Step 2: Convert to fraction form
    26,648.80/39,908.40 = 12,781.60/x
  3. Step 3: Cross multiply
    26,648.80x = 39,908.40 × 12,781.60
  4. Step 4: Simplify right side
    26,648.80x = 510,093,205.44
  5. Step 5: Solve for x
    x = 510,093,205.44/26,648.80
  6. Step 6: Final answer
    x = 19,141.32

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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.