Home / 21,233.07-31,845.42-20,179.35

Finding the Fourth Proportional to 21,233.07, 31,845.42 and 20,179.35

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Solution

The fourth proportional to 21,233.07, 31,845.42 and 20,179.35 is: 30,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.07 : 31,845.42 = 20,179.35 : x
  2. Step 2: Convert to fraction form
    21,233.07/31,845.42 = 20,179.35/x
  3. Step 3: Cross multiply
    21,233.07x = 31,845.42 × 20,179.35
  4. Step 4: Simplify right side
    21,233.07x = 642,619,876.08
  5. Step 5: Solve for x
    x = 642,619,876.08/21,233.07
  6. Step 6: Final answer
    x = 30,265.05

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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.