Home / 10,218.65-15,321.82-6,663.41

Finding the Fourth Proportional to 10,218.65, 15,321.82 and 6,663.41

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Solution

The fourth proportional to 10,218.65, 15,321.82 and 6,663.41 is: 9,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.65 : 15,321.82 = 6,663.41 : x
  2. Step 2: Convert to fraction form
    10,218.65/15,321.82 = 6,663.41/x
  3. Step 3: Cross multiply
    10,218.65x = 15,321.82 × 6,663.41
  4. Step 4: Simplify right side
    10,218.65x = 102,095,535.29
  5. Step 5: Solve for x
    x = 102,095,535.29/10,218.65
  6. Step 6: Final answer
    x = 9,991.10

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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.