Home / 27,680.72-38,201.45-15,747.90

Finding the Fourth Proportional to 27,680.72, 38,201.45 and 15,747.90

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Solution

The fourth proportional to 27,680.72, 38,201.45 and 15,747.90 is: 21,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680.72 : 38,201.45 = 15,747.90 : x
  2. Step 2: Convert to fraction form
    27,680.72/38,201.45 = 15,747.90/x
  3. Step 3: Cross multiply
    27,680.72x = 38,201.45 × 15,747.90
  4. Step 4: Simplify right side
    27,680.72x = 601,592,535.72
  5. Step 5: Solve for x
    x = 601,592,535.72/27,680.72
  6. Step 6: Final answer
    x = 21,733.27

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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.