Home / 20,946.70-31,423.43-6,902.65

Finding the Fourth Proportional to 20,946.70, 31,423.43 and 6,902.65

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Solution

The fourth proportional to 20,946.70, 31,423.43 and 6,902.65 is: 10,355.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.70 : 31,423.43 = 6,902.65 : x
  2. Step 2: Convert to fraction form
    20,946.70/31,423.43 = 6,902.65/x
  3. Step 3: Cross multiply
    20,946.70x = 31,423.43 × 6,902.65
  4. Step 4: Simplify right side
    20,946.70x = 216,904,939.09
  5. Step 5: Solve for x
    x = 216,904,939.09/20,946.70
  6. Step 6: Final answer
    x = 10,355.09

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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.