Home / 18,642.18-27,963.26-12,781.02

Finding the Fourth Proportional to 18,642.18, 27,963.26 and 12,781.02

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Solution

The fourth proportional to 18,642.18, 27,963.26 and 12,781.02 is: 19,171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.18 : 27,963.26 = 12,781.02 : x
  2. Step 2: Convert to fraction form
    18,642.18/27,963.26 = 12,781.02/x
  3. Step 3: Cross multiply
    18,642.18x = 27,963.26 × 12,781.02
  4. Step 4: Simplify right side
    18,642.18x = 357,398,985.33
  5. Step 5: Solve for x
    x = 357,398,985.33/18,642.18
  6. Step 6: Final answer
    x = 19,171.52

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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.