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Finding the Fourth Proportional to 21,994.38, 32,990.49 and 7,210.26

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Solution

The fourth proportional to 21,994.38, 32,990.49 and 7,210.26 is: 10,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.38 : 32,990.49 = 7,210.26 : x
  2. Step 2: Convert to fraction form
    21,994.38/32,990.49 = 7,210.26/x
  3. Step 3: Cross multiply
    21,994.38x = 32,990.49 × 7,210.26
  4. Step 4: Simplify right side
    21,994.38x = 237,870,010.43
  5. Step 5: Solve for x
    x = 237,870,010.43/21,994.38
  6. Step 6: Final answer
    x = 10,815.04

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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.