Home / 13,722.27-18,936.71-7,434.66

Finding the Fourth Proportional to 13,722.27, 18,936.71 and 7,434.66

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Solution

The fourth proportional to 13,722.27, 18,936.71 and 7,434.66 is: 10,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.27 : 18,936.71 = 7,434.66 : x
  2. Step 2: Convert to fraction form
    13,722.27/18,936.71 = 7,434.66/x
  3. Step 3: Cross multiply
    13,722.27x = 18,936.71 × 7,434.66
  4. Step 4: Simplify right side
    13,722.27x = 140,787,963.20
  5. Step 5: Solve for x
    x = 140,787,963.20/13,722.27
  6. Step 6: Final answer
    x = 10,259.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.