Home / 10,439.10-15,658.71-2,647.92

Finding the Fourth Proportional to 10,439.10, 15,658.71 and 2,647.92

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Solution

The fourth proportional to 10,439.10, 15,658.71 and 2,647.92 is: 3,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.10 : 15,658.71 = 2,647.92 : x
  2. Step 2: Convert to fraction form
    10,439.10/15,658.71 = 2,647.92/x
  3. Step 3: Cross multiply
    10,439.10x = 15,658.71 × 2,647.92
  4. Step 4: Simplify right side
    10,439.10x = 41,463,011.38
  5. Step 5: Solve for x
    x = 41,463,011.38/10,439.10
  6. Step 6: Final answer
    x = 3,971.90

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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.