Home / 20,791,640.88-28,680,945.21-12,088,851.57

Finding the Fourth Proportional to 20,791,640.88, 28,680,945.21 and 12,088,851.57

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Solution

The fourth proportional to 20,791,640.88, 28,680,945.21 and 12,088,851.57 is: 16,675,917.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791,640.88 : 28,680,945.21 = 12,088,851.57 : x
  2. Step 2: Convert to fraction form
    20,791,640.88/28,680,945.21 = 12,088,851.57/x
  3. Step 3: Cross multiply
    20,791,640.88x = 28,680,945.21 × 12,088,851.57
  4. Step 4: Simplify right side
    20,791,640.88x = 346,719,689,530,992.50
  5. Step 5: Solve for x
    x = 346,719,689,530,992.50/20,791,640.88
  6. Step 6: Final answer
    x = 16,675,917.57

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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.