Home / 12,342.78-18,515.62-4,335.09

Finding the Fourth Proportional to 12,342.78, 18,515.62 and 4,335.09

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Solution

The fourth proportional to 12,342.78, 18,515.62 and 4,335.09 is: 6,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.78 : 18,515.62 = 4,335.09 : x
  2. Step 2: Convert to fraction form
    12,342.78/18,515.62 = 4,335.09/x
  3. Step 3: Cross multiply
    12,342.78x = 18,515.62 × 4,335.09
  4. Step 4: Simplify right side
    12,342.78x = 80,266,764.85
  5. Step 5: Solve for x
    x = 80,266,764.85/12,342.78
  6. Step 6: Final answer
    x = 6,503.14

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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.