Home / 12,940.74-19,395.45-9,186.62

Finding the Fourth Proportional to 12,940.74, 19,395.45 and 9,186.62

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Solution

The fourth proportional to 12,940.74, 19,395.45 and 9,186.62 is: 13,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.74 : 19,395.45 = 9,186.62 : x
  2. Step 2: Convert to fraction form
    12,940.74/19,395.45 = 9,186.62/x
  3. Step 3: Cross multiply
    12,940.74x = 19,395.45 × 9,186.62
  4. Step 4: Simplify right side
    12,940.74x = 178,178,531.90
  5. Step 5: Solve for x
    x = 178,178,531.90/12,940.74
  6. Step 6: Final answer
    x = 13,768.81

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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.