Home / 12,482,629.20-18,723,943.80-10,215,147.60

Finding the Fourth Proportional to 12,482,629.20, 18,723,943.80 and 10,215,147.60

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Solution

The fourth proportional to 12,482,629.20, 18,723,943.80 and 10,215,147.60 is: 15,322,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,629.20 : 18,723,943.80 = 10,215,147.60 : x
  2. Step 2: Convert to fraction form
    12,482,629.20/18,723,943.80 = 10,215,147.60/x
  3. Step 3: Cross multiply
    12,482,629.20x = 18,723,943.80 × 10,215,147.60
  4. Step 4: Simplify right side
    12,482,629.20x = 191,267,849,571,104.88
  5. Step 5: Solve for x
    x = 191,267,849,571,104.88/12,482,629.20
  6. Step 6: Final answer
    x = 15,322,721.40

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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.