Home / 12,919.08-17,829.20-8,677.22

Finding the Fourth Proportional to 12,919.08, 17,829.20 and 8,677.22

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Solution

The fourth proportional to 12,919.08, 17,829.20 and 8,677.22 is: 11,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.08 : 17,829.20 = 8,677.22 : x
  2. Step 2: Convert to fraction form
    12,919.08/17,829.20 = 8,677.22/x
  3. Step 3: Cross multiply
    12,919.08x = 17,829.20 × 8,677.22
  4. Step 4: Simplify right side
    12,919.08x = 154,707,890.82
  5. Step 5: Solve for x
    x = 154,707,890.82/12,919.08
  6. Step 6: Final answer
    x = 11,975.15

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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.