Home / 20,168,139.70-27,824,101.32-12,419,729.92

Finding the Fourth Proportional to 20,168,139.70, 27,824,101.32 and 12,419,729.92

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Solution

The fourth proportional to 20,168,139.70, 27,824,101.32 and 12,419,729.92 is: 17,134,343.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168,139.70 : 27,824,101.32 = 12,419,729.92 : x
  2. Step 2: Convert to fraction form
    20,168,139.70/27,824,101.32 = 12,419,729.92/x
  3. Step 3: Cross multiply
    20,168,139.70x = 27,824,101.32 × 12,419,729.92
  4. Step 4: Simplify right side
    20,168,139.70x = 345,567,823,661,115.50
  5. Step 5: Solve for x
    x = 345,567,823,661,115.50/20,168,139.70
  6. Step 6: Final answer
    x = 17,134,343.02

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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.