Home / 13,722.06-18,936.45-7,434.44

Finding the Fourth Proportional to 13,722.06, 18,936.45 and 7,434.44

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Solution

The fourth proportional to 13,722.06, 18,936.45 and 7,434.44 is: 10,259.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.06 : 18,936.45 = 7,434.44 : x
  2. Step 2: Convert to fraction form
    13,722.06/18,936.45 = 7,434.44/x
  3. Step 3: Cross multiply
    13,722.06x = 18,936.45 × 7,434.44
  4. Step 4: Simplify right side
    13,722.06x = 140,781,806.66
  5. Step 5: Solve for x
    x = 140,781,806.66/13,722.06
  6. Step 6: Final answer
    x = 10,259.52

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1.5x scale

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.