Home / 20,517,307.75-28,313,781.61-11,224,709.51

Finding the Fourth Proportional to 20,517,307.75, 28,313,781.61 and 11,224,709.51

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Solution

The fourth proportional to 20,517,307.75, 28,313,781.61 and 11,224,709.51 is: 15,490,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517,307.75 : 28,313,781.61 = 11,224,709.51 : x
  2. Step 2: Convert to fraction form
    20,517,307.75/28,313,781.61 = 11,224,709.51/x
  3. Step 3: Cross multiply
    20,517,307.75x = 28,313,781.61 × 11,224,709.51
  4. Step 4: Simplify right side
    20,517,307.75x = 317,813,973,645,706.56
  5. Step 5: Solve for x
    x = 317,813,973,645,706.56/20,517,307.75
  6. Step 6: Final answer
    x = 15,490,042.73

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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.