Home / 12,115.62-16,719.50-6,810.48

Finding the Fourth Proportional to 12,115.62, 16,719.50 and 6,810.48

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Solution

The fourth proportional to 12,115.62, 16,719.50 and 6,810.48 is: 9,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.62 : 16,719.50 = 6,810.48 : x
  2. Step 2: Convert to fraction form
    12,115.62/16,719.50 = 6,810.48/x
  3. Step 3: Cross multiply
    12,115.62x = 16,719.50 × 6,810.48
  4. Step 4: Simplify right side
    12,115.62x = 113,867,837.39
  5. Step 5: Solve for x
    x = 113,867,837.39/12,115.62
  6. Step 6: Final answer
    x = 9,398.43

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1.5x scale

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.