Home / 12,511.31-18,763.70-5,114.39

Finding the Fourth Proportional to 12,511.31, 18,763.70 and 5,114.39

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Solution

The fourth proportional to 12,511.31, 18,763.70 and 5,114.39 is: 7,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.31 : 18,763.70 = 5,114.39 : x
  2. Step 2: Convert to fraction form
    12,511.31/18,763.70 = 5,114.39/x
  3. Step 3: Cross multiply
    12,511.31x = 18,763.70 × 5,114.39
  4. Step 4: Simplify right side
    12,511.31x = 95,964,760.25
  5. Step 5: Solve for x
    x = 95,964,760.25/12,511.31
  6. Step 6: Final answer
    x = 7,670.24

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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.