Home / 15,375,807.88-21,215,094.66-9,179,648.68

Finding the Fourth Proportional to 15,375,807.88, 21,215,094.66 and 9,179,648.68

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Solution

The fourth proportional to 15,375,807.88, 21,215,094.66 and 9,179,648.68 is: 12,665,813.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,375,807.88 : 21,215,094.66 = 9,179,648.68 : x
  2. Step 2: Convert to fraction form
    15,375,807.88/21,215,094.66 = 9,179,648.68/x
  3. Step 3: Cross multiply
    15,375,807.88x = 21,215,094.66 × 9,179,648.68
  4. Step 4: Simplify right side
    15,375,807.88x = 194,747,115,691,744.03
  5. Step 5: Solve for x
    x = 194,747,115,691,744.03/15,375,807.88
  6. Step 6: Final answer
    x = 12,665,813.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.