Home / 12,511-18,772.28-4,719.16

Finding the Fourth Proportional to 12,511, 18,772.28 and 4,719.16

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Solution

The fourth proportional to 12,511, 18,772.28 and 4,719.16 is: 7,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511 : 18,772.28 = 4,719.16 : x
  2. Step 2: Convert to fraction form
    12,511/18,772.28 = 4,719.16/x
  3. Step 3: Cross multiply
    12,511x = 18,772.28 × 4,719.16
  4. Step 4: Simplify right side
    12,511x = 88,589,392.88
  5. Step 5: Solve for x
    x = 88,589,392.88/12,511
  6. Step 6: Final answer
    x = 7,080.92

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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.