Home / 12,991,423.68-17,928,203.04-7,190,608.32

Finding the Fourth Proportional to 12,991,423.68, 17,928,203.04 and 7,190,608.32

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Solution

The fourth proportional to 12,991,423.68, 17,928,203.04 and 7,190,608.32 is: 9,923,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991,423.68 : 17,928,203.04 = 7,190,608.32 : x
  2. Step 2: Convert to fraction form
    12,991,423.68/17,928,203.04 = 7,190,608.32/x
  3. Step 3: Cross multiply
    12,991,423.68x = 17,928,203.04 × 7,190,608.32
  4. Step 4: Simplify right side
    12,991,423.68x = 128,914,685,942,073.30
  5. Step 5: Solve for x
    x = 128,914,685,942,073.30/12,991,423.68
  6. Step 6: Final answer
    x = 9,923,060.71

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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.