Home / 13,412,616.72-18,509,819.40-9,499,383.60

Finding the Fourth Proportional to 13,412,616.72, 18,509,819.40 and 9,499,383.60

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Solution

The fourth proportional to 13,412,616.72, 18,509,819.40 and 9,499,383.60 is: 13,109,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412,616.72 : 18,509,819.40 = 9,499,383.60 : x
  2. Step 2: Convert to fraction form
    13,412,616.72/18,509,819.40 = 9,499,383.60/x
  3. Step 3: Cross multiply
    13,412,616.72x = 18,509,819.40 × 9,499,383.60
  4. Step 4: Simplify right side
    13,412,616.72x = 175,831,874,847,321.81
  5. Step 5: Solve for x
    x = 175,831,874,847,321.81/13,412,616.72
  6. Step 6: Final answer
    x = 13,109,438.56

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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.