Home / 11,818.71-17,731.14-4,423.75

Finding the Fourth Proportional to 11,818.71, 17,731.14 and 4,423.75

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Solution

The fourth proportional to 11,818.71, 17,731.14 and 4,423.75 is: 6,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.71 : 17,731.14 = 4,423.75 : x
  2. Step 2: Convert to fraction form
    11,818.71/17,731.14 = 4,423.75/x
  3. Step 3: Cross multiply
    11,818.71x = 17,731.14 × 4,423.75
  4. Step 4: Simplify right side
    11,818.71x = 78,438,130.58
  5. Step 5: Solve for x
    x = 78,438,130.58/11,818.71
  6. Step 6: Final answer
    x = 6,636.78

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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.