Home / 11,423.19-15,764.79-6,387.31

Finding the Fourth Proportional to 11,423.19, 15,764.79 and 6,387.31

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Solution

The fourth proportional to 11,423.19, 15,764.79 and 6,387.31 is: 8,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.19 : 15,764.79 = 6,387.31 : x
  2. Step 2: Convert to fraction form
    11,423.19/15,764.79 = 6,387.31/x
  3. Step 3: Cross multiply
    11,423.19x = 15,764.79 × 6,387.31
  4. Step 4: Simplify right side
    11,423.19x = 100,694,600.81
  5. Step 5: Solve for x
    x = 100,694,600.81/11,423.19
  6. Step 6: Final answer
    x = 8,814.93

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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.