Home / 26,781.15-40,155.53-11,987.31

Finding the Fourth Proportional to 26,781.15, 40,155.53 and 11,987.31

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Solution

The fourth proportional to 26,781.15, 40,155.53 and 11,987.31 is: 17,973.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.15 : 40,155.53 = 11,987.31 : x
  2. Step 2: Convert to fraction form
    26,781.15/40,155.53 = 11,987.31/x
  3. Step 3: Cross multiply
    26,781.15x = 40,155.53 × 11,987.31
  4. Step 4: Simplify right side
    26,781.15x = 481,356,726.39
  5. Step 5: Solve for x
    x = 481,356,726.39/26,781.15
  6. Step 6: Final answer
    x = 17,973.71

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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.