Home / 21,150,622.80-31,690,504.80-18,103,694.40

Finding the Fourth Proportional to 21,150,622.80, 31,690,504.80 and 18,103,694.40

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Solution

The fourth proportional to 21,150,622.80, 31,690,504.80 and 18,103,694.40 is: 27,125,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150,622.80 : 31,690,504.80 = 18,103,694.40 : x
  2. Step 2: Convert to fraction form
    21,150,622.80/31,690,504.80 = 18,103,694.40/x
  3. Step 3: Cross multiply
    21,150,622.80x = 31,690,504.80 × 18,103,694.40
  4. Step 4: Simplify right side
    21,150,622.80x = 573,715,214,280,933.12
  5. Step 5: Solve for x
    x = 573,715,214,280,933.12/21,150,622.80
  6. Step 6: Final answer
    x = 27,125,216.11

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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.