Home / 10,687.78-16,031.70-6,299.20

Finding the Fourth Proportional to 10,687.78, 16,031.70 and 6,299.20

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Solution

The fourth proportional to 10,687.78, 16,031.70 and 6,299.20 is: 9,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.78 : 16,031.70 = 6,299.20 : x
  2. Step 2: Convert to fraction form
    10,687.78/16,031.70 = 6,299.20/x
  3. Step 3: Cross multiply
    10,687.78x = 16,031.70 × 6,299.20
  4. Step 4: Simplify right side
    10,687.78x = 100,986,884.64
  5. Step 5: Solve for x
    x = 100,986,884.64/10,687.78
  6. Step 6: Final answer
    x = 9,448.82

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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.