Home / 20,764,179.72-28,653,700.68-11,942,960.16

Finding the Fourth Proportional to 20,764,179.72, 28,653,700.68 and 11,942,960.16

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Solution

The fourth proportional to 20,764,179.72, 28,653,700.68 and 11,942,960.16 is: 16,480,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764,179.72 : 28,653,700.68 = 11,942,960.16 : x
  2. Step 2: Convert to fraction form
    20,764,179.72/28,653,700.68 = 11,942,960.16/x
  3. Step 3: Cross multiply
    20,764,179.72x = 28,653,700.68 × 11,942,960.16
  4. Step 4: Simplify right side
    20,764,179.72x = 342,210,005,657,804.94
  5. Step 5: Solve for x
    x = 342,210,005,657,804.94/20,764,179.72
  6. Step 6: Final answer
    x = 16,480,786.16

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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.