Home / 27,785.72-38,343.84-15,849.02

Finding the Fourth Proportional to 27,785.72, 38,343.84 and 15,849.02

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Solution

The fourth proportional to 27,785.72, 38,343.84 and 15,849.02 is: 21,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.72 : 38,343.84 = 15,849.02 : x
  2. Step 2: Convert to fraction form
    27,785.72/38,343.84 = 15,849.02/x
  3. Step 3: Cross multiply
    27,785.72x = 38,343.84 × 15,849.02
  4. Step 4: Simplify right side
    27,785.72x = 607,712,287.04
  5. Step 5: Solve for x
    x = 607,712,287.04/27,785.72
  6. Step 6: Final answer
    x = 21,871.39

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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.