Home / 20,434,749.36-28,206,787.55-12,177,400.98

Finding the Fourth Proportional to 20,434,749.36, 28,206,787.55 and 12,177,400.98

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Solution

The fourth proportional to 20,434,749.36, 28,206,787.55 and 12,177,400.98 is: 16,808,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434,749.36 : 28,206,787.55 = 12,177,400.98 : x
  2. Step 2: Convert to fraction form
    20,434,749.36/28,206,787.55 = 12,177,400.98/x
  3. Step 3: Cross multiply
    20,434,749.36x = 28,206,787.55 × 12,177,400.98
  4. Step 4: Simplify right side
    20,434,749.36x = 343,485,362,398,910.31
  5. Step 5: Solve for x
    x = 343,485,362,398,910.31/20,434,749.36
  6. Step 6: Final answer
    x = 16,808,885.51

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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.