Home / 27,997.79-38,636.95-15,422.54

Finding the Fourth Proportional to 27,997.79, 38,636.95 and 15,422.54

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Solution

The fourth proportional to 27,997.79, 38,636.95 and 15,422.54 is: 21,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.79 : 38,636.95 = 15,422.54 : x
  2. Step 2: Convert to fraction form
    27,997.79/38,636.95 = 15,422.54/x
  3. Step 3: Cross multiply
    27,997.79x = 38,636.95 × 15,422.54
  4. Step 4: Simplify right side
    27,997.79x = 595,879,906.85
  5. Step 5: Solve for x
    x = 595,879,906.85/27,997.79
  6. Step 6: Final answer
    x = 21,283.11

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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.