Home / 27,783,132.78-38,340,723.21-15,559,989.78

Finding the Fourth Proportional to 27,783,132.78, 38,340,723.21 and 15,559,989.78

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Solution

The fourth proportional to 27,783,132.78, 38,340,723.21 and 15,559,989.78 is: 21,472,785.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,783,132.78 : 38,340,723.21 = 15,559,989.78 : x
  2. Step 2: Convert to fraction form
    27,783,132.78/38,340,723.21 = 15,559,989.78/x
  3. Step 3: Cross multiply
    27,783,132.78x = 38,340,723.21 × 15,559,989.78
  4. Step 4: Simplify right side
    27,783,132.78x = 596,581,261,305,408.75
  5. Step 5: Solve for x
    x = 596,581,261,305,408.75/27,783,132.78
  6. Step 6: Final answer
    x = 21,472,785.88

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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.