Home / 20,188,785.72-27,860,382.25-11,021,428.47

Finding the Fourth Proportional to 20,188,785.72, 27,860,382.25 and 11,021,428.47

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Solution

The fourth proportional to 20,188,785.72, 27,860,382.25 and 11,021,428.47 is: 15,209,493.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188,785.72 : 27,860,382.25 = 11,021,428.47 : x
  2. Step 2: Convert to fraction form
    20,188,785.72/27,860,382.25 = 11,021,428.47/x
  3. Step 3: Cross multiply
    20,188,785.72x = 27,860,382.25 × 11,021,428.47
  4. Step 4: Simplify right side
    20,188,785.72x = 307,061,210,115,232.69
  5. Step 5: Solve for x
    x = 307,061,210,115,232.69/20,188,785.72
  6. Step 6: Final answer
    x = 15,209,493.74

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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.