Home / 12,519.13-18,788.96-5,123.66

Finding the Fourth Proportional to 12,519.13, 18,788.96 and 5,123.66

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Solution

The fourth proportional to 12,519.13, 18,788.96 and 5,123.66 is: 7,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.13 : 18,788.96 = 5,123.66 : x
  2. Step 2: Convert to fraction form
    12,519.13/18,788.96 = 5,123.66/x
  3. Step 3: Cross multiply
    12,519.13x = 18,788.96 × 5,123.66
  4. Step 4: Simplify right side
    12,519.13x = 96,268,242.79
  5. Step 5: Solve for x
    x = 96,268,242.79/12,519.13
  6. Step 6: Final answer
    x = 7,689.69

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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.