Home / 10,911.38-16,367.06-3,120.80

Finding the Fourth Proportional to 10,911.38, 16,367.06 and 3,120.80

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Solution

The fourth proportional to 10,911.38, 16,367.06 and 3,120.80 is: 4,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.38 : 16,367.06 = 3,120.80 : x
  2. Step 2: Convert to fraction form
    10,911.38/16,367.06 = 3,120.80/x
  3. Step 3: Cross multiply
    10,911.38x = 16,367.06 × 3,120.80
  4. Step 4: Simplify right side
    10,911.38x = 51,078,246.81
  5. Step 5: Solve for x
    x = 51,078,246.81/10,911.38
  6. Step 6: Final answer
    x = 4,681.19

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1.5x scale

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.