Home / 26,781.34-40,155.81-11,987.50

Finding the Fourth Proportional to 26,781.34, 40,155.81 and 11,987.50

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Solution

The fourth proportional to 26,781.34, 40,155.81 and 11,987.50 is: 17,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.34 : 40,155.81 = 11,987.50 : x
  2. Step 2: Convert to fraction form
    26,781.34/40,155.81 = 11,987.50/x
  3. Step 3: Cross multiply
    26,781.34x = 40,155.81 × 11,987.50
  4. Step 4: Simplify right side
    26,781.34x = 481,367,627.03
  5. Step 5: Solve for x
    x = 481,367,627.03/26,781.34
  6. Step 6: Final answer
    x = 17,974.00

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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.