Home / 12,795.78-19,161.58-8,101.62

Finding the Fourth Proportional to 12,795.78, 19,161.58 and 8,101.62

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Solution

The fourth proportional to 12,795.78, 19,161.58 and 8,101.62 is: 12,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.78 : 19,161.58 = 8,101.62 : x
  2. Step 2: Convert to fraction form
    12,795.78/19,161.58 = 8,101.62/x
  3. Step 3: Cross multiply
    12,795.78x = 19,161.58 × 8,101.62
  4. Step 4: Simplify right side
    12,795.78x = 155,239,839.76
  5. Step 5: Solve for x
    x = 155,239,839.76/12,795.78
  6. Step 6: Final answer
    x = 12,132.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.