Home / 20,190,628.10-30,285,942.15-18,175,088.90

Finding the Fourth Proportional to 20,190,628.10, 30,285,942.15 and 18,175,088.90

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Solution

The fourth proportional to 20,190,628.10, 30,285,942.15 and 18,175,088.90 is: 27,262,633.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,628.10 : 30,285,942.15 = 18,175,088.90 : x
  2. Step 2: Convert to fraction form
    20,190,628.10/30,285,942.15 = 18,175,088.90/x
  3. Step 3: Cross multiply
    20,190,628.10x = 30,285,942.15 × 18,175,088.90
  4. Step 4: Simplify right side
    20,190,628.10x = 550,449,690,996,507.06
  5. Step 5: Solve for x
    x = 550,449,690,996,507.06/20,190,628.10
  6. Step 6: Final answer
    x = 27,262,633.35

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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.