Home / 20,902,054.75-31,357,119.78-7,947,198.11

Finding the Fourth Proportional to 20,902,054.75, 31,357,119.78 and 7,947,198.11

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Solution

The fourth proportional to 20,902,054.75, 31,357,119.78 and 7,947,198.11 is: 11,922,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902,054.75 : 31,357,119.78 = 7,947,198.11 : x
  2. Step 2: Convert to fraction form
    20,902,054.75/31,357,119.78 = 7,947,198.11/x
  3. Step 3: Cross multiply
    20,902,054.75x = 31,357,119.78 × 7,947,198.11
  4. Step 4: Simplify right side
    20,902,054.75x = 249,201,243,129,052.41
  5. Step 5: Solve for x
    x = 249,201,243,129,052.41/20,902,054.75
  6. Step 6: Final answer
    x = 11,922,332.33

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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.