Home / 13,614.39-20,418.81-4,252.89

Finding the Fourth Proportional to 13,614.39, 20,418.81 and 4,252.89

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Solution

The fourth proportional to 13,614.39, 20,418.81 and 4,252.89 is: 6,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.39 : 20,418.81 = 4,252.89 : x
  2. Step 2: Convert to fraction form
    13,614.39/20,418.81 = 4,252.89/x
  3. Step 3: Cross multiply
    13,614.39x = 20,418.81 × 4,252.89
  4. Step 4: Simplify right side
    13,614.39x = 86,838,952.86
  5. Step 5: Solve for x
    x = 86,838,952.86/13,614.39
  6. Step 6: Final answer
    x = 6,378.47

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1.5x scale

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.