Home / 10,720.94-16,078.50-4,479.64

Finding the Fourth Proportional to 10,720.94, 16,078.50 and 4,479.64

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Solution

The fourth proportional to 10,720.94, 16,078.50 and 4,479.64 is: 6,718.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.94 : 16,078.50 = 4,479.64 : x
  2. Step 2: Convert to fraction form
    10,720.94/16,078.50 = 4,479.64/x
  3. Step 3: Cross multiply
    10,720.94x = 16,078.50 × 4,479.64
  4. Step 4: Simplify right side
    10,720.94x = 72,025,891.74
  5. Step 5: Solve for x
    x = 72,025,891.74/10,720.94
  6. Step 6: Final answer
    x = 6,718.24

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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.