Home / 27,990.97-38,627.99-15,415.72

Finding the Fourth Proportional to 27,990.97, 38,627.99 and 15,415.72

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Solution

The fourth proportional to 27,990.97, 38,627.99 and 15,415.72 is: 21,273.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.97 : 38,627.99 = 15,415.72 : x
  2. Step 2: Convert to fraction form
    27,990.97/38,627.99 = 15,415.72/x
  3. Step 3: Cross multiply
    27,990.97x = 38,627.99 × 15,415.72
  4. Step 4: Simplify right side
    27,990.97x = 595,478,162.16
  5. Step 5: Solve for x
    x = 595,478,162.16/27,990.97
  6. Step 6: Final answer
    x = 21,273.94

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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.