Home / 10,121.16-13,939.38-9,343.56

Finding the Fourth Proportional to 10,121.16, 13,939.38 and 9,343.56

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Solution

The fourth proportional to 10,121.16, 13,939.38 and 9,343.56 is: 12,868.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.16 : 13,939.38 = 9,343.56 : x
  2. Step 2: Convert to fraction form
    10,121.16/13,939.38 = 9,343.56/x
  3. Step 3: Cross multiply
    10,121.16x = 13,939.38 × 9,343.56
  4. Step 4: Simplify right side
    10,121.16x = 130,243,433.39
  5. Step 5: Solve for x
    x = 130,243,433.39/10,121.16
  6. Step 6: Final answer
    x = 12,868.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.