Home / 20,672,390.68-28,527,899.52-11,507,198.56

Finding the Fourth Proportional to 20,672,390.68, 28,527,899.52 and 11,507,198.56

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Solution

The fourth proportional to 20,672,390.68, 28,527,899.52 and 11,507,198.56 is: 15,879,934.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,390.68 : 28,527,899.52 = 11,507,198.56 : x
  2. Step 2: Convert to fraction form
    20,672,390.68/28,527,899.52 = 11,507,198.56/x
  3. Step 3: Cross multiply
    20,672,390.68x = 28,527,899.52 × 11,507,198.56
  4. Step 4: Simplify right side
    20,672,390.68x = 328,276,204,276,368.69
  5. Step 5: Solve for x
    x = 328,276,204,276,368.69/20,672,390.68
  6. Step 6: Final answer
    x = 15,879,934.23

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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.