Home / 20,946.69-31,416.35-6,906.42

Finding the Fourth Proportional to 20,946.69, 31,416.35 and 6,906.42

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Solution

The fourth proportional to 20,946.69, 31,416.35 and 6,906.42 is: 10,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.69 : 31,416.35 = 6,906.42 : x
  2. Step 2: Convert to fraction form
    20,946.69/31,416.35 = 6,906.42/x
  3. Step 3: Cross multiply
    20,946.69x = 31,416.35 × 6,906.42
  4. Step 4: Simplify right side
    20,946.69x = 216,974,473.43
  5. Step 5: Solve for x
    x = 216,974,473.43/20,946.69
  6. Step 6: Final answer
    x = 10,358.41

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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.