Home / 18,517.61-27,780.36-10,623.76

Finding the Fourth Proportional to 18,517.61, 27,780.36 and 10,623.76

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Solution

The fourth proportional to 18,517.61, 27,780.36 and 10,623.76 is: 15,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.61 : 27,780.36 = 10,623.76 : x
  2. Step 2: Convert to fraction form
    18,517.61/27,780.36 = 10,623.76/x
  3. Step 3: Cross multiply
    18,517.61x = 27,780.36 × 10,623.76
  4. Step 4: Simplify right side
    18,517.61x = 295,131,738.45
  5. Step 5: Solve for x
    x = 295,131,738.45/18,517.61
  6. Step 6: Final answer
    x = 15,937.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.