Home / 10,424.49-15,631.23-7,821.96

Finding the Fourth Proportional to 10,424.49, 15,631.23 and 7,821.96

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Solution

The fourth proportional to 10,424.49, 15,631.23 and 7,821.96 is: 11,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,424.49 : 15,631.23 = 7,821.96 : x
  2. Step 2: Convert to fraction form
    10,424.49/15,631.23 = 7,821.96/x
  3. Step 3: Cross multiply
    10,424.49x = 15,631.23 × 7,821.96
  4. Step 4: Simplify right side
    10,424.49x = 122,266,855.81
  5. Step 5: Solve for x
    x = 122,266,855.81/10,424.49
  6. Step 6: Final answer
    x = 11,728.81

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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.