Home / 20,225.76-30,330.36-11,922.36

Finding the Fourth Proportional to 20,225.76, 30,330.36 and 11,922.36

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Solution

The fourth proportional to 20,225.76, 30,330.36 and 11,922.36 is: 17,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.76 : 30,330.36 = 11,922.36 : x
  2. Step 2: Convert to fraction form
    20,225.76/30,330.36 = 11,922.36/x
  3. Step 3: Cross multiply
    20,225.76x = 30,330.36 × 11,922.36
  4. Step 4: Simplify right side
    20,225.76x = 361,609,470.85
  5. Step 5: Solve for x
    x = 361,609,470.85/20,225.76
  6. Step 6: Final answer
    x = 17,878.66

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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.