Home / 31,418.98-43,344.48-17,987.15

Finding the Fourth Proportional to 31,418.98, 43,344.48 and 17,987.15

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Solution

The fourth proportional to 31,418.98, 43,344.48 and 17,987.15 is: 24,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.98 : 43,344.48 = 17,987.15 : x
  2. Step 2: Convert to fraction form
    31,418.98/43,344.48 = 17,987.15/x
  3. Step 3: Cross multiply
    31,418.98x = 43,344.48 × 17,987.15
  4. Step 4: Simplify right side
    31,418.98x = 779,643,663.43
  5. Step 5: Solve for x
    x = 779,643,663.43/31,418.98
  6. Step 6: Final answer
    x = 24,814.42

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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.