Home / 11,127.15-16,689.65-2,919.15

Finding the Fourth Proportional to 11,127.15, 16,689.65 and 2,919.15

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Solution

The fourth proportional to 11,127.15, 16,689.65 and 2,919.15 is: 4,378.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.15 : 16,689.65 = 2,919.15 : x
  2. Step 2: Convert to fraction form
    11,127.15/16,689.65 = 2,919.15/x
  3. Step 3: Cross multiply
    11,127.15x = 16,689.65 × 2,919.15
  4. Step 4: Simplify right side
    11,127.15x = 48,719,577.20
  5. Step 5: Solve for x
    x = 48,719,577.20/11,127.15
  6. Step 6: Final answer
    x = 4,378.44

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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.