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Finding the Fourth Proportional to 20,250,408.65, 27,945,637.99 and 10,957,978.80

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Solution

The fourth proportional to 20,250,408.65, 27,945,637.99 and 10,957,978.80 is: 15,122,050.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250,408.65 : 27,945,637.99 = 10,957,978.80 : x
  2. Step 2: Convert to fraction form
    20,250,408.65/27,945,637.99 = 10,957,978.80/x
  3. Step 3: Cross multiply
    20,250,408.65x = 27,945,637.99 × 10,957,978.80
  4. Step 4: Simplify right side
    20,250,408.65x = 306,227,708,674,209.06
  5. Step 5: Solve for x
    x = 306,227,708,674,209.06/20,250,408.65
  6. Step 6: Final answer
    x = 15,122,050.82

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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.