Home / 27,991.36-38,625.78-17,781.58

Finding the Fourth Proportional to 27,991.36, 38,625.78 and 17,781.58

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Solution

The fourth proportional to 27,991.36, 38,625.78 and 17,781.58 is: 24,537.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.36 : 38,625.78 = 17,781.58 : x
  2. Step 2: Convert to fraction form
    27,991.36/38,625.78 = 17,781.58/x
  3. Step 3: Cross multiply
    27,991.36x = 38,625.78 × 17,781.58
  4. Step 4: Simplify right side
    27,991.36x = 686,827,397.13
  5. Step 5: Solve for x
    x = 686,827,397.13/27,991.36
  6. Step 6: Final answer
    x = 24,537.12

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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.