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Finding the Fourth Proportional to 40,396.88, 60,604.94 and 20,357.13

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Solution

The fourth proportional to 40,396.88, 60,604.94 and 20,357.13 is: 30,540.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,396.88 : 60,604.94 = 20,357.13 : x
  2. Step 2: Convert to fraction form
    40,396.88/60,604.94 = 20,357.13/x
  3. Step 3: Cross multiply
    40,396.88x = 60,604.94 × 20,357.13
  4. Step 4: Simplify right side
    40,396.88x = 1,233,742,642.22
  5. Step 5: Solve for x
    x = 1,233,742,642.22/40,396.88
  6. Step 6: Final answer
    x = 30,540.54

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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.