Home / 18,131.91-27,208.65-9,811.76

Finding the Fourth Proportional to 18,131.91, 27,208.65 and 9,811.76

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Solution

The fourth proportional to 18,131.91, 27,208.65 and 9,811.76 is: 14,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.91 : 27,208.65 = 9,811.76 : x
  2. Step 2: Convert to fraction form
    18,131.91/27,208.65 = 9,811.76/x
  3. Step 3: Cross multiply
    18,131.91x = 27,208.65 × 9,811.76
  4. Step 4: Simplify right side
    18,131.91x = 266,964,651.17
  5. Step 5: Solve for x
    x = 266,964,651.17/18,131.91
  6. Step 6: Final answer
    x = 14,723.47

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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.