Home / 27,736.17-38,279.29-15,638.99

Finding the Fourth Proportional to 27,736.17, 38,279.29 and 15,638.99

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Solution

The fourth proportional to 27,736.17, 38,279.29 and 15,638.99 is: 21,583.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,736.17 : 38,279.29 = 15,638.99 : x
  2. Step 2: Convert to fraction form
    27,736.17/38,279.29 = 15,638.99/x
  3. Step 3: Cross multiply
    27,736.17x = 38,279.29 × 15,638.99
  4. Step 4: Simplify right side
    27,736.17x = 598,649,433.52
  5. Step 5: Solve for x
    x = 598,649,433.52/27,736.17
  6. Step 6: Final answer
    x = 21,583.71

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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.