Home / 27,788.67-38,344.79-15,851.30

Finding the Fourth Proportional to 27,788.67, 38,344.79 and 15,851.30

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Solution

The fourth proportional to 27,788.67, 38,344.79 and 15,851.30 is: 21,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,788.67 : 38,344.79 = 15,851.30 : x
  2. Step 2: Convert to fraction form
    27,788.67/38,344.79 = 15,851.30/x
  3. Step 3: Cross multiply
    27,788.67x = 38,344.79 × 15,851.30
  4. Step 4: Simplify right side
    27,788.67x = 607,814,617.63
  5. Step 5: Solve for x
    x = 607,814,617.63/27,788.67
  6. Step 6: Final answer
    x = 21,872.75

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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.