Home / 10,389.96-15,576.03-3,812.76

Finding the Fourth Proportional to 10,389.96, 15,576.03 and 3,812.76

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Solution

The fourth proportional to 10,389.96, 15,576.03 and 3,812.76 is: 5,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.96 : 15,576.03 = 3,812.76 : x
  2. Step 2: Convert to fraction form
    10,389.96/15,576.03 = 3,812.76/x
  3. Step 3: Cross multiply
    10,389.96x = 15,576.03 × 3,812.76
  4. Step 4: Simplify right side
    10,389.96x = 59,387,664.14
  5. Step 5: Solve for x
    x = 59,387,664.14/10,389.96
  6. Step 6: Final answer
    x = 5,715.87

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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.