Home / 10,890.39-16,331.66-3,772.70

Finding the Fourth Proportional to 10,890.39, 16,331.66 and 3,772.70

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Solution

The fourth proportional to 10,890.39, 16,331.66 and 3,772.70 is: 5,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.39 : 16,331.66 = 3,772.70 : x
  2. Step 2: Convert to fraction form
    10,890.39/16,331.66 = 3,772.70/x
  3. Step 3: Cross multiply
    10,890.39x = 16,331.66 × 3,772.70
  4. Step 4: Simplify right side
    10,890.39x = 61,614,475.65
  5. Step 5: Solve for x
    x = 61,614,475.65/10,890.39
  6. Step 6: Final answer
    x = 5,657.69

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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.