Home / 27,689.82-38,215.16-15,755.03

Finding the Fourth Proportional to 27,689.82, 38,215.16 and 15,755.03

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Solution

The fourth proportional to 27,689.82, 38,215.16 and 15,755.03 is: 21,743.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.82 : 38,215.16 = 15,755.03 : x
  2. Step 2: Convert to fraction form
    27,689.82/38,215.16 = 15,755.03/x
  3. Step 3: Cross multiply
    27,689.82x = 38,215.16 × 15,755.03
  4. Step 4: Simplify right side
    27,689.82x = 602,080,865.71
  5. Step 5: Solve for x
    x = 602,080,865.71/27,689.82
  6. Step 6: Final answer
    x = 21,743.76

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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.