Home / 27,738.75-38,279.48-14,991.90

Finding the Fourth Proportional to 27,738.75, 38,279.48 and 14,991.90

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Solution

The fourth proportional to 27,738.75, 38,279.48 and 14,991.90 is: 20,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.75 : 38,279.48 = 14,991.90 : x
  2. Step 2: Convert to fraction form
    27,738.75/38,279.48 = 14,991.90/x
  3. Step 3: Cross multiply
    27,738.75x = 38,279.48 × 14,991.90
  4. Step 4: Simplify right side
    27,738.75x = 573,882,061.25
  5. Step 5: Solve for x
    x = 573,882,061.25/27,738.75
  6. Step 6: Final answer
    x = 20,688.82

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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.