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Finding the Fourth Proportional to 30,544.46, 45,788.49 and 21,188.90

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Solution

The fourth proportional to 30,544.46, 45,788.49 and 21,188.90 is: 31,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,544.46 : 45,788.49 = 21,188.90 : x
  2. Step 2: Convert to fraction form
    30,544.46/45,788.49 = 21,188.90/x
  3. Step 3: Cross multiply
    30,544.46x = 45,788.49 × 21,188.90
  4. Step 4: Simplify right side
    30,544.46x = 970,207,506.82
  5. Step 5: Solve for x
    x = 970,207,506.82/30,544.46
  6. Step 6: Final answer
    x = 31,763.79

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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.