Home / 11,927.17-16,456.53-6,620.66

Finding the Fourth Proportional to 11,927.17, 16,456.53 and 6,620.66

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Solution

The fourth proportional to 11,927.17, 16,456.53 and 6,620.66 is: 9,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.17 : 16,456.53 = 6,620.66 : x
  2. Step 2: Convert to fraction form
    11,927.17/16,456.53 = 6,620.66/x
  3. Step 3: Cross multiply
    11,927.17x = 16,456.53 × 6,620.66
  4. Step 4: Simplify right side
    11,927.17x = 108,953,089.91
  5. Step 5: Solve for x
    x = 108,953,089.91/11,927.17
  6. Step 6: Final answer
    x = 9,134.87

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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.