Home / 12,128,391.84-16,744,734.24-7,720,604.52

Finding the Fourth Proportional to 12,128,391.84, 16,744,734.24 and 7,720,604.52

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Solution

The fourth proportional to 12,128,391.84, 16,744,734.24 and 7,720,604.52 is: 10,659,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,391.84 : 16,744,734.24 = 7,720,604.52 : x
  2. Step 2: Convert to fraction form
    12,128,391.84/16,744,734.24 = 7,720,604.52/x
  3. Step 3: Cross multiply
    12,128,391.84x = 16,744,734.24 × 7,720,604.52
  4. Step 4: Simplify right side
    12,128,391.84x = 129,279,470,775,819.09
  5. Step 5: Solve for x
    x = 129,279,470,775,819.09/12,128,391.84
  6. Step 6: Final answer
    x = 10,659,242.58

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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.