Home / 27,815.31-38,386.67-15,882.48

Finding the Fourth Proportional to 27,815.31, 38,386.67 and 15,882.48

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Solution

The fourth proportional to 27,815.31, 38,386.67 and 15,882.48 is: 21,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.31 : 38,386.67 = 15,882.48 : x
  2. Step 2: Convert to fraction form
    27,815.31/38,386.67 = 15,882.48/x
  3. Step 3: Cross multiply
    27,815.31x = 38,386.67 × 15,882.48
  4. Step 4: Simplify right side
    27,815.31x = 609,675,439.13
  5. Step 5: Solve for x
    x = 609,675,439.13/27,815.31
  6. Step 6: Final answer
    x = 21,918.70

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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.