Home / 10,639.68-15,960.16-3,244.64

Finding the Fourth Proportional to 10,639.68, 15,960.16 and 3,244.64

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Solution

The fourth proportional to 10,639.68, 15,960.16 and 3,244.64 is: 4,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.68 : 15,960.16 = 3,244.64 : x
  2. Step 2: Convert to fraction form
    10,639.68/15,960.16 = 3,244.64/x
  3. Step 3: Cross multiply
    10,639.68x = 15,960.16 × 3,244.64
  4. Step 4: Simplify right side
    10,639.68x = 51,784,973.54
  5. Step 5: Solve for x
    x = 51,784,973.54/10,639.68
  6. Step 6: Final answer
    x = 4,867.16

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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.