Home / 20,672,372.50-28,527,874.05-11,507,180.38

Finding the Fourth Proportional to 20,672,372.50, 28,527,874.05 and 11,507,180.38

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Solution

The fourth proportional to 20,672,372.50, 28,527,874.05 and 11,507,180.38 is: 15,879,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,372.50 : 28,527,874.05 = 11,507,180.38 : x
  2. Step 2: Convert to fraction form
    20,672,372.50/28,527,874.05 = 11,507,180.38/x
  3. Step 3: Cross multiply
    20,672,372.50x = 28,527,874.05 × 11,507,180.38
  4. Step 4: Simplify right side
    20,672,372.50x = 328,275,392,551,271.19
  5. Step 5: Solve for x
    x = 328,275,392,551,271.19/20,672,372.50
  6. Step 6: Final answer
    x = 15,879,908.92

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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.