Home / 20,672,372-28,527,873.36-11,507,179.88

Finding the Fourth Proportional to 20,672,372, 28,527,873.36 and 11,507,179.88

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Solution

The fourth proportional to 20,672,372, 28,527,873.36 and 11,507,179.88 is: 15,879,908.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,372 : 28,527,873.36 = 11,507,179.88 : x
  2. Step 2: Convert to fraction form
    20,672,372/28,527,873.36 = 11,507,179.88/x
  3. Step 3: Cross multiply
    20,672,372x = 28,527,873.36 × 11,507,179.88
  4. Step 4: Simplify right side
    20,672,372x = 328,275,370,347,380
  5. Step 5: Solve for x
    x = 328,275,370,347,380/20,672,372
  6. Step 6: Final answer
    x = 15,879,908.23

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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.