Home / 10,912.46-16,368.68-3,121.27

Finding the Fourth Proportional to 10,912.46, 16,368.68 and 3,121.27

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Solution

The fourth proportional to 10,912.46, 16,368.68 and 3,121.27 is: 4,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.46 : 16,368.68 = 3,121.27 : x
  2. Step 2: Convert to fraction form
    10,912.46/16,368.68 = 3,121.27/x
  3. Step 3: Cross multiply
    10,912.46x = 16,368.68 × 3,121.27
  4. Step 4: Simplify right side
    10,912.46x = 51,091,058.91
  5. Step 5: Solve for x
    x = 51,091,058.91/10,912.46
  6. Step 6: Final answer
    x = 4,681.90

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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.