Home / 21,969,942.80-32,954,914.20-12,989,872.40

Finding the Fourth Proportional to 21,969,942.80, 32,954,914.20 and 12,989,872.40

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Solution

The fourth proportional to 21,969,942.80, 32,954,914.20 and 12,989,872.40 is: 19,484,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969,942.80 : 32,954,914.20 = 12,989,872.40 : x
  2. Step 2: Convert to fraction form
    21,969,942.80/32,954,914.20 = 12,989,872.40/x
  3. Step 3: Cross multiply
    21,969,942.80x = 32,954,914.20 × 12,989,872.40
  4. Step 4: Simplify right side
    21,969,942.80x = 428,080,130,410,948.06
  5. Step 5: Solve for x
    x = 428,080,130,410,948.06/21,969,942.80
  6. Step 6: Final answer
    x = 19,484,808.60

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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.