Home / 12,519.86-18,779.79-5,599.22

Finding the Fourth Proportional to 12,519.86, 18,779.79 and 5,599.22

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Solution

The fourth proportional to 12,519.86, 18,779.79 and 5,599.22 is: 8,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.86 : 18,779.79 = 5,599.22 : x
  2. Step 2: Convert to fraction form
    12,519.86/18,779.79 = 5,599.22/x
  3. Step 3: Cross multiply
    12,519.86x = 18,779.79 × 5,599.22
  4. Step 4: Simplify right side
    12,519.86x = 105,152,175.76
  5. Step 5: Solve for x
    x = 105,152,175.76/12,519.86
  6. Step 6: Final answer
    x = 8,398.83

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Similar ratio
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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.