Home / 15,419,883-21,279,905.10-8,543,721.72

Finding the Fourth Proportional to 15,419,883, 21,279,905.10 and 8,543,721.72

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Solution

The fourth proportional to 15,419,883, 21,279,905.10 and 8,543,721.72 is: 11,790,594.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419,883 : 21,279,905.10 = 8,543,721.72 : x
  2. Step 2: Convert to fraction form
    15,419,883/21,279,905.10 = 8,543,721.72/x
  3. Step 3: Cross multiply
    15,419,883x = 21,279,905.10 × 8,543,721.72
  4. Step 4: Simplify right side
    15,419,883x = 181,809,587,402,408.81
  5. Step 5: Solve for x
    x = 181,809,587,402,408.81/15,419,883
  6. Step 6: Final answer
    x = 11,790,594.48

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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.