Home / 10,384.12-15,576.40-3,721.05

Finding the Fourth Proportional to 10,384.12, 15,576.40 and 3,721.05

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Solution

The fourth proportional to 10,384.12, 15,576.40 and 3,721.05 is: 5,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,384.12 : 15,576.40 = 3,721.05 : x
  2. Step 2: Convert to fraction form
    10,384.12/15,576.40 = 3,721.05/x
  3. Step 3: Cross multiply
    10,384.12x = 15,576.40 × 3,721.05
  4. Step 4: Simplify right side
    10,384.12x = 57,960,553.92
  5. Step 5: Solve for x
    x = 57,960,553.92/10,384.12
  6. Step 6: Final answer
    x = 5,581.65

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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.