Home / 10,939.09-16,406.20-3,146.08

Finding the Fourth Proportional to 10,939.09, 16,406.20 and 3,146.08

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Solution

The fourth proportional to 10,939.09, 16,406.20 and 3,146.08 is: 4,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.09 : 16,406.20 = 3,146.08 : x
  2. Step 2: Convert to fraction form
    10,939.09/16,406.20 = 3,146.08/x
  3. Step 3: Cross multiply
    10,939.09x = 16,406.20 × 3,146.08
  4. Step 4: Simplify right side
    10,939.09x = 51,615,217.70
  5. Step 5: Solve for x
    x = 51,615,217.70/10,939.09
  6. Step 6: Final answer
    x = 4,718.42

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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.