Home / 10,986.57-16,486.01-5,438.43

Finding the Fourth Proportional to 10,986.57, 16,486.01 and 5,438.43

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Solution

The fourth proportional to 10,986.57, 16,486.01 and 5,438.43 is: 8,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.57 : 16,486.01 = 5,438.43 : x
  2. Step 2: Convert to fraction form
    10,986.57/16,486.01 = 5,438.43/x
  3. Step 3: Cross multiply
    10,986.57x = 16,486.01 × 5,438.43
  4. Step 4: Simplify right side
    10,986.57x = 89,658,011.36
  5. Step 5: Solve for x
    x = 89,658,011.36/10,986.57
  6. Step 6: Final answer
    x = 8,160.69

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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.