Home / 11,818.76-17,731.20-5,243.36

Finding the Fourth Proportional to 11,818.76, 17,731.20 and 5,243.36

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Solution

The fourth proportional to 11,818.76, 17,731.20 and 5,243.36 is: 7,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.76 : 17,731.20 = 5,243.36 : x
  2. Step 2: Convert to fraction form
    11,818.76/17,731.20 = 5,243.36/x
  3. Step 3: Cross multiply
    11,818.76x = 17,731.20 × 5,243.36
  4. Step 4: Simplify right side
    11,818.76x = 92,971,064.83
  5. Step 5: Solve for x
    x = 92,971,064.83/11,818.76
  6. Step 6: Final answer
    x = 7,866.40

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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.