Home / 21,890,800.80-32,836,201.20-12,820,874.40

Finding the Fourth Proportional to 21,890,800.80, 32,836,201.20 and 12,820,874.40

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Solution

The fourth proportional to 21,890,800.80, 32,836,201.20 and 12,820,874.40 is: 19,231,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890,800.80 : 32,836,201.20 = 12,820,874.40 : x
  2. Step 2: Convert to fraction form
    21,890,800.80/32,836,201.20 = 12,820,874.40/x
  3. Step 3: Cross multiply
    21,890,800.80x = 32,836,201.20 × 12,820,874.40
  4. Step 4: Simplify right side
    21,890,800.80x = 420,988,811,358,329.31
  5. Step 5: Solve for x
    x = 420,988,811,358,329.31/21,890,800.80
  6. Step 6: Final answer
    x = 19,231,311.60

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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.