Home / 20,946.14-31,423.85-6,910.51

Finding the Fourth Proportional to 20,946.14, 31,423.85 and 6,910.51

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Solution

The fourth proportional to 20,946.14, 31,423.85 and 6,910.51 is: 10,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.14 : 31,423.85 = 6,910.51 : x
  2. Step 2: Convert to fraction form
    20,946.14/31,423.85 = 6,910.51/x
  3. Step 3: Cross multiply
    20,946.14x = 31,423.85 × 6,910.51
  4. Step 4: Simplify right side
    20,946.14x = 217,154,829.66
  5. Step 5: Solve for x
    x = 217,154,829.66/20,946.14
  6. Step 6: Final answer
    x = 10,367.30

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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.