Home / 21,844.48-30,129.12-17,119.36

Finding the Fourth Proportional to 21,844.48, 30,129.12 and 17,119.36

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Solution

The fourth proportional to 21,844.48, 30,129.12 and 17,119.36 is: 23,611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,844.48 : 30,129.12 = 17,119.36 : x
  2. Step 2: Convert to fraction form
    21,844.48/30,129.12 = 17,119.36/x
  3. Step 3: Cross multiply
    21,844.48x = 30,129.12 × 17,119.36
  4. Step 4: Simplify right side
    21,844.48x = 515,791,251.76
  5. Step 5: Solve for x
    x = 515,791,251.76/21,844.48
  6. Step 6: Final answer
    x = 23,611.97

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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.