Home / 13,691.06-18,893.20-7,722.50

Finding the Fourth Proportional to 13,691.06, 18,893.20 and 7,722.50

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Solution

The fourth proportional to 13,691.06, 18,893.20 and 7,722.50 is: 10,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.06 : 18,893.20 = 7,722.50 : x
  2. Step 2: Convert to fraction form
    13,691.06/18,893.20 = 7,722.50/x
  3. Step 3: Cross multiply
    13,691.06x = 18,893.20 × 7,722.50
  4. Step 4: Simplify right side
    13,691.06x = 145,902,698.39
  5. Step 5: Solve for x
    x = 145,902,698.39/13,691.06
  6. Step 6: Final answer
    x = 10,656.79

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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.