Home / 20,114,809.80-30,172,214.70-7,987,165.80

Finding the Fourth Proportional to 20,114,809.80, 30,172,214.70 and 7,987,165.80

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Solution

The fourth proportional to 20,114,809.80, 30,172,214.70 and 7,987,165.80 is: 11,980,748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114,809.80 : 30,172,214.70 = 7,987,165.80 : x
  2. Step 2: Convert to fraction form
    20,114,809.80/30,172,214.70 = 7,987,165.80/x
  3. Step 3: Cross multiply
    20,114,809.80x = 30,172,214.70 × 7,987,165.80
  4. Step 4: Simplify right side
    20,114,809.80x = 240,990,481,362,097.25
  5. Step 5: Solve for x
    x = 240,990,481,362,097.25/20,114,809.80
  6. Step 6: Final answer
    x = 11,980,748.70

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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.