Home / 10,639.16-15,961.26-5,361.20

Finding the Fourth Proportional to 10,639.16, 15,961.26 and 5,361.20

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Solution

The fourth proportional to 10,639.16, 15,961.26 and 5,361.20 is: 8,043.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.16 : 15,961.26 = 5,361.20 : x
  2. Step 2: Convert to fraction form
    10,639.16/15,961.26 = 5,361.20/x
  3. Step 3: Cross multiply
    10,639.16x = 15,961.26 × 5,361.20
  4. Step 4: Simplify right side
    10,639.16x = 85,571,427.31
  5. Step 5: Solve for x
    x = 85,571,427.31/10,639.16
  6. Step 6: Final answer
    x = 8,043.07

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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.