Home / 20,940.57-31,414.70-6,901.42

Finding the Fourth Proportional to 20,940.57, 31,414.70 and 6,901.42

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Solution

The fourth proportional to 20,940.57, 31,414.70 and 6,901.42 is: 10,353.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.57 : 31,414.70 = 6,901.42 : x
  2. Step 2: Convert to fraction form
    20,940.57/31,414.70 = 6,901.42/x
  3. Step 3: Cross multiply
    20,940.57x = 31,414.70 × 6,901.42
  4. Step 4: Simplify right side
    20,940.57x = 216,806,004.37
  5. Step 5: Solve for x
    x = 216,806,004.37/20,940.57
  6. Step 6: Final answer
    x = 10,353.40

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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.