Home / 10,681.74-16,032.94-5,138.91

Finding the Fourth Proportional to 10,681.74, 16,032.94 and 5,138.91

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Solution

The fourth proportional to 10,681.74, 16,032.94 and 5,138.91 is: 7,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.74 : 16,032.94 = 5,138.91 : x
  2. Step 2: Convert to fraction form
    10,681.74/16,032.94 = 5,138.91/x
  3. Step 3: Cross multiply
    10,681.74x = 16,032.94 × 5,138.91
  4. Step 4: Simplify right side
    10,681.74x = 82,391,822.85
  5. Step 5: Solve for x
    x = 82,391,822.85/10,681.74
  6. Step 6: Final answer
    x = 7,713.33

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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.