Home / 27,788.81-38,344.97-15,851.44

Finding the Fourth Proportional to 27,788.81, 38,344.97 and 15,851.44

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Solution

The fourth proportional to 27,788.81, 38,344.97 and 15,851.44 is: 21,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,788.81 : 38,344.97 = 15,851.44 : x
  2. Step 2: Convert to fraction form
    27,788.81/38,344.97 = 15,851.44/x
  3. Step 3: Cross multiply
    27,788.81x = 38,344.97 × 15,851.44
  4. Step 4: Simplify right side
    27,788.81x = 607,822,991.26
  5. Step 5: Solve for x
    x = 607,822,991.26/27,788.81
  6. Step 6: Final answer
    x = 21,872.94

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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.