Home / 21,970,982.80-32,956,474.20-12,990,912.40

Finding the Fourth Proportional to 21,970,982.80, 32,956,474.20 and 12,990,912.40

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Solution

The fourth proportional to 21,970,982.80, 32,956,474.20 and 12,990,912.40 is: 19,486,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970,982.80 : 32,956,474.20 = 12,990,912.40 : x
  2. Step 2: Convert to fraction form
    21,970,982.80/32,956,474.20 = 12,990,912.40/x
  3. Step 3: Cross multiply
    21,970,982.80x = 32,956,474.20 × 12,990,912.40
  4. Step 4: Simplify right side
    21,970,982.80x = 428,134,669,345,060.06
  5. Step 5: Solve for x
    x = 428,134,669,345,060.06/21,970,982.80
  6. Step 6: Final answer
    x = 19,486,368.60

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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.