Home / 12,614.24-18,920.88-3,380

Finding the Fourth Proportional to 12,614.24, 18,920.88 and 3,380

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Solution

The fourth proportional to 12,614.24, 18,920.88 and 3,380 is: 5,069.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.24 : 18,920.88 = 3,380 : x
  2. Step 2: Convert to fraction form
    12,614.24/18,920.88 = 3,380/x
  3. Step 3: Cross multiply
    12,614.24x = 18,920.88 × 3,380
  4. Step 4: Simplify right side
    12,614.24x = 63,952,574.40
  5. Step 5: Solve for x
    x = 63,952,574.40/12,614.24
  6. Step 6: Final answer
    x = 5,069.87

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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.