Home / 27,995.38-38,633.63-15,420.13

Finding the Fourth Proportional to 27,995.38, 38,633.63 and 15,420.13

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Solution

The fourth proportional to 27,995.38, 38,633.63 and 15,420.13 is: 21,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.38 : 38,633.63 = 15,420.13 : x
  2. Step 2: Convert to fraction form
    27,995.38/38,633.63 = 15,420.13/x
  3. Step 3: Cross multiply
    27,995.38x = 38,633.63 × 15,420.13
  4. Step 4: Simplify right side
    27,995.38x = 595,735,596.97
  5. Step 5: Solve for x
    x = 595,735,596.97/27,995.38
  6. Step 6: Final answer
    x = 21,279.78

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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.