Home / 12,321.25-18,486.46-7,394.42

Finding the Fourth Proportional to 12,321.25, 18,486.46 and 7,394.42

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Solution

The fourth proportional to 12,321.25, 18,486.46 and 7,394.42 is: 11,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.25 : 18,486.46 = 7,394.42 : x
  2. Step 2: Convert to fraction form
    12,321.25/18,486.46 = 7,394.42/x
  3. Step 3: Cross multiply
    12,321.25x = 18,486.46 × 7,394.42
  4. Step 4: Simplify right side
    12,321.25x = 136,696,649.55
  5. Step 5: Solve for x
    x = 136,696,649.55/12,321.25
  6. Step 6: Final answer
    x = 11,094.38

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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.