Home / 10,806.78-16,178.65-6,634.15

Finding the Fourth Proportional to 10,806.78, 16,178.65 and 6,634.15

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Solution

The fourth proportional to 10,806.78, 16,178.65 and 6,634.15 is: 9,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,806.78 : 16,178.65 = 6,634.15 : x
  2. Step 2: Convert to fraction form
    10,806.78/16,178.65 = 6,634.15/x
  3. Step 3: Cross multiply
    10,806.78x = 16,178.65 × 6,634.15
  4. Step 4: Simplify right side
    10,806.78x = 107,331,533.87
  5. Step 5: Solve for x
    x = 107,331,533.87/10,806.78
  6. Step 6: Final answer
    x = 9,931.87

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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.