Home / 20,918,839.28-31,360,287.84-7,270,212.56

Finding the Fourth Proportional to 20,918,839.28, 31,360,287.84 and 7,270,212.56

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Solution

The fourth proportional to 20,918,839.28, 31,360,287.84 and 7,270,212.56 is: 10,899,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,839.28 : 31,360,287.84 = 7,270,212.56 : x
  2. Step 2: Convert to fraction form
    20,918,839.28/31,360,287.84 = 7,270,212.56/x
  3. Step 3: Cross multiply
    20,918,839.28x = 31,360,287.84 × 7,270,212.56
  4. Step 4: Simplify right side
    20,918,839.28x = 227,995,958,539,583.25
  5. Step 5: Solve for x
    x = 227,995,958,539,583.25/20,918,839.28
  6. Step 6: Final answer
    x = 10,899,073.10

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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.