Home / 27,636.30-38,138.22-15,699.72

Finding the Fourth Proportional to 27,636.30, 38,138.22 and 15,699.72

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Solution

The fourth proportional to 27,636.30, 38,138.22 and 15,699.72 is: 21,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.30 : 38,138.22 = 15,699.72 : x
  2. Step 2: Convert to fraction form
    27,636.30/38,138.22 = 15,699.72/x
  3. Step 3: Cross multiply
    27,636.30x = 38,138.22 × 15,699.72
  4. Step 4: Simplify right side
    27,636.30x = 598,759,375.30
  5. Step 5: Solve for x
    x = 598,759,375.30/27,636.30
  6. Step 6: Final answer
    x = 21,665.69

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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.