Home / 20,933.22-31,329.36-11,432.46

Finding the Fourth Proportional to 20,933.22, 31,329.36 and 11,432.46

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Solution

The fourth proportional to 20,933.22, 31,329.36 and 11,432.46 is: 17,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.22 : 31,329.36 = 11,432.46 : x
  2. Step 2: Convert to fraction form
    20,933.22/31,329.36 = 11,432.46/x
  3. Step 3: Cross multiply
    20,933.22x = 31,329.36 × 11,432.46
  4. Step 4: Simplify right side
    20,933.22x = 358,171,655.03
  5. Step 5: Solve for x
    x = 358,171,655.03/20,933.22
  6. Step 6: Final answer
    x = 17,110.20

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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.