Home / 20,881,168.39-28,819,475.76-12,179,340.82

Finding the Fourth Proportional to 20,881,168.39, 28,819,475.76 and 12,179,340.82

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Solution

The fourth proportional to 20,881,168.39, 28,819,475.76 and 12,179,340.82 is: 16,809,510.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,168.39 : 28,819,475.76 = 12,179,340.82 : x
  2. Step 2: Convert to fraction form
    20,881,168.39/28,819,475.76 = 12,179,340.82/x
  3. Step 3: Cross multiply
    20,881,168.39x = 28,819,475.76 × 12,179,340.82
  4. Step 4: Simplify right side
    20,881,168.39x = 351,002,217,534,768.56
  5. Step 5: Solve for x
    x = 351,002,217,534,768.56/20,881,168.39
  6. Step 6: Final answer
    x = 16,809,510.42

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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.