Home / 15,279,708.72-21,086,008.92-8,404,713.84

Finding the Fourth Proportional to 15,279,708.72, 21,086,008.92 and 8,404,713.84

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Solution

The fourth proportional to 15,279,708.72, 21,086,008.92 and 8,404,713.84 is: 11,598,511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279,708.72 : 21,086,008.92 = 8,404,713.84 : x
  2. Step 2: Convert to fraction form
    15,279,708.72/21,086,008.92 = 8,404,713.84/x
  3. Step 3: Cross multiply
    15,279,708.72x = 21,086,008.92 × 8,404,713.84
  4. Step 4: Simplify right side
    15,279,708.72x = 177,221,871,000,287.47
  5. Step 5: Solve for x
    x = 177,221,871,000,287.47/15,279,708.72
  6. Step 6: Final answer
    x = 11,598,511.09

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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.