Home / 20,809.47-31,216.92-10,949.22

Finding the Fourth Proportional to 20,809.47, 31,216.92 and 10,949.22

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Solution

The fourth proportional to 20,809.47, 31,216.92 and 10,949.22 is: 16,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.47 : 31,216.92 = 10,949.22 : x
  2. Step 2: Convert to fraction form
    20,809.47/31,216.92 = 10,949.22/x
  3. Step 3: Cross multiply
    20,809.47x = 31,216.92 × 10,949.22
  4. Step 4: Simplify right side
    20,809.47x = 341,800,924.80
  5. Step 5: Solve for x
    x = 341,800,924.80/20,809.47
  6. Step 6: Final answer
    x = 16,425.26

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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.