Home / 10,951.12-16,421.80-3,158.08

Finding the Fourth Proportional to 10,951.12, 16,421.80 and 3,158.08

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Solution

The fourth proportional to 10,951.12, 16,421.80 and 3,158.08 is: 4,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.12 : 16,421.80 = 3,158.08 : x
  2. Step 2: Convert to fraction form
    10,951.12/16,421.80 = 3,158.08/x
  3. Step 3: Cross multiply
    10,951.12x = 16,421.80 × 3,158.08
  4. Step 4: Simplify right side
    10,951.12x = 51,861,358.14
  5. Step 5: Solve for x
    x = 51,861,358.14/10,951.12
  6. Step 6: Final answer
    x = 4,735.71

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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.