Home / 12,645,853.28-18,972,330.96-5,078,133.44

Finding the Fourth Proportional to 12,645,853.28, 18,972,330.96 and 5,078,133.44

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Solution

The fourth proportional to 12,645,853.28, 18,972,330.96 and 5,078,133.44 is: 7,618,626.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,853.28 : 18,972,330.96 = 5,078,133.44 : x
  2. Step 2: Convert to fraction form
    12,645,853.28/18,972,330.96 = 5,078,133.44/x
  3. Step 3: Cross multiply
    12,645,853.28x = 18,972,330.96 × 5,078,133.44
  4. Step 4: Simplify right side
    12,645,853.28x = 96,344,028,282,723.31
  5. Step 5: Solve for x
    x = 96,344,028,282,723.31/12,645,853.28
  6. Step 6: Final answer
    x = 7,618,626.13

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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.