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Finding the Fourth Proportional to 21,950.40, 32,933.70 and 8,812.20

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Solution

The fourth proportional to 21,950.40, 32,933.70 and 8,812.20 is: 13,221.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.40 : 32,933.70 = 8,812.20 : x
  2. Step 2: Convert to fraction form
    21,950.40/32,933.70 = 8,812.20/x
  3. Step 3: Cross multiply
    21,950.40x = 32,933.70 × 8,812.20
  4. Step 4: Simplify right side
    21,950.40x = 290,218,351.14
  5. Step 5: Solve for x
    x = 290,218,351.14/21,950.40
  6. Step 6: Final answer
    x = 13,221.55

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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.