Home / 27,987.07-38,647.82-17,781.39

Finding the Fourth Proportional to 27,987.07, 38,647.82 and 17,781.39

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Solution

The fourth proportional to 27,987.07, 38,647.82 and 17,781.39 is: 24,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.07 : 38,647.82 = 17,781.39 : x
  2. Step 2: Convert to fraction form
    27,987.07/38,647.82 = 17,781.39/x
  3. Step 3: Cross multiply
    27,987.07x = 38,647.82 × 17,781.39
  4. Step 4: Simplify right side
    27,987.07x = 687,211,960.07
  5. Step 5: Solve for x
    x = 687,211,960.07/27,987.07
  6. Step 6: Final answer
    x = 24,554.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.