Home / 10,921.10-16,382.01-3,129.26

Finding the Fourth Proportional to 10,921.10, 16,382.01 and 3,129.26

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Solution

The fourth proportional to 10,921.10, 16,382.01 and 3,129.26 is: 4,693.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.10 : 16,382.01 = 3,129.26 : x
  2. Step 2: Convert to fraction form
    10,921.10/16,382.01 = 3,129.26/x
  3. Step 3: Cross multiply
    10,921.10x = 16,382.01 × 3,129.26
  4. Step 4: Simplify right side
    10,921.10x = 51,263,568.61
  5. Step 5: Solve for x
    x = 51,263,568.61/10,921.10
  6. Step 6: Final answer
    x = 4,693.99

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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.