Home / 10,243.40-15,368.94-5,309.96

Finding the Fourth Proportional to 10,243.40, 15,368.94 and 5,309.96

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Solution

The fourth proportional to 10,243.40, 15,368.94 and 5,309.96 is: 7,966.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.40 : 15,368.94 = 5,309.96 : x
  2. Step 2: Convert to fraction form
    10,243.40/15,368.94 = 5,309.96/x
  3. Step 3: Cross multiply
    10,243.40x = 15,368.94 × 5,309.96
  4. Step 4: Simplify right side
    10,243.40x = 81,608,379.80
  5. Step 5: Solve for x
    x = 81,608,379.80/10,243.40
  6. Step 6: Final answer
    x = 7,966.93

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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.