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Finding the Fourth Proportional to 20,377.22, 30,559.91 and 7,894.46

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Solution

The fourth proportional to 20,377.22, 30,559.91 and 7,894.46 is: 11,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.22 : 30,559.91 = 7,894.46 : x
  2. Step 2: Convert to fraction form
    20,377.22/30,559.91 = 7,894.46/x
  3. Step 3: Cross multiply
    20,377.22x = 30,559.91 × 7,894.46
  4. Step 4: Simplify right side
    20,377.22x = 241,254,046.23
  5. Step 5: Solve for x
    x = 241,254,046.23/20,377.22
  6. Step 6: Final answer
    x = 11,839.40

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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.