Home / 20,949.59-31,417.64-6,906.35

Finding the Fourth Proportional to 20,949.59, 31,417.64 and 6,906.35

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Solution

The fourth proportional to 20,949.59, 31,417.64 and 6,906.35 is: 10,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.59 : 31,417.64 = 6,906.35 : x
  2. Step 2: Convert to fraction form
    20,949.59/31,417.64 = 6,906.35/x
  3. Step 3: Cross multiply
    20,949.59x = 31,417.64 × 6,906.35
  4. Step 4: Simplify right side
    20,949.59x = 216,981,287.93
  5. Step 5: Solve for x
    x = 216,981,287.93/20,949.59
  6. Step 6: Final answer
    x = 10,357.30

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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.