Home / 21,890,821.80-32,836,232.70-12,820,895.40

Finding the Fourth Proportional to 21,890,821.80, 32,836,232.70 and 12,820,895.40

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Solution

The fourth proportional to 21,890,821.80, 32,836,232.70 and 12,820,895.40 is: 19,231,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890,821.80 : 32,836,232.70 = 12,820,895.40 : x
  2. Step 2: Convert to fraction form
    21,890,821.80/32,836,232.70 = 12,820,895.40/x
  3. Step 3: Cross multiply
    21,890,821.80x = 32,836,232.70 × 12,820,895.40
  4. Step 4: Simplify right side
    21,890,821.80x = 420,989,904,776,759.56
  5. Step 5: Solve for x
    x = 420,989,904,776,759.56/21,890,821.80
  6. Step 6: Final answer
    x = 19,231,343.10

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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.