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Finding the Fourth Proportional to 18,154.86, 27,215.86 and 12,610.80

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Solution

The fourth proportional to 18,154.86, 27,215.86 and 12,610.80 is: 18,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.86 : 27,215.86 = 12,610.80 : x
  2. Step 2: Convert to fraction form
    18,154.86/27,215.86 = 12,610.80/x
  3. Step 3: Cross multiply
    18,154.86x = 27,215.86 × 12,610.80
  4. Step 4: Simplify right side
    18,154.86x = 343,213,767.29
  5. Step 5: Solve for x
    x = 343,213,767.29/18,154.86
  6. Step 6: Final answer
    x = 18,904.79

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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.