Home / 20,934.70-31,406.67-6,894.16

Finding the Fourth Proportional to 20,934.70, 31,406.67 and 6,894.16

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Solution

The fourth proportional to 20,934.70, 31,406.67 and 6,894.16 is: 10,342.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.70 : 31,406.67 = 6,894.16 : x
  2. Step 2: Convert to fraction form
    20,934.70/31,406.67 = 6,894.16/x
  3. Step 3: Cross multiply
    20,934.70x = 31,406.67 × 6,894.16
  4. Step 4: Simplify right side
    20,934.70x = 216,522,608.05
  5. Step 5: Solve for x
    x = 216,522,608.05/20,934.70
  6. Step 6: Final answer
    x = 10,342.76

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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.