Home / 20,942.28-31,418.01-6,901.74

Finding the Fourth Proportional to 20,942.28, 31,418.01 and 6,901.74

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Solution

The fourth proportional to 20,942.28, 31,418.01 and 6,901.74 is: 10,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.28 : 31,418.01 = 6,901.74 : x
  2. Step 2: Convert to fraction form
    20,942.28/31,418.01 = 6,901.74/x
  3. Step 3: Cross multiply
    20,942.28x = 31,418.01 × 6,901.74
  4. Step 4: Simplify right side
    20,942.28x = 216,838,936.34
  5. Step 5: Solve for x
    x = 216,838,936.34/20,942.28
  6. Step 6: Final answer
    x = 10,354.12

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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.