Home / 12,649.11-18,998.28-10,310.85

Finding the Fourth Proportional to 12,649.11, 18,998.28 and 10,310.85

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Solution

The fourth proportional to 12,649.11, 18,998.28 and 10,310.85 is: 15,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.11 : 18,998.28 = 10,310.85 : x
  2. Step 2: Convert to fraction form
    12,649.11/18,998.28 = 10,310.85/x
  3. Step 3: Cross multiply
    12,649.11x = 18,998.28 × 10,310.85
  4. Step 4: Simplify right side
    12,649.11x = 195,888,415.34
  5. Step 5: Solve for x
    x = 195,888,415.34/12,649.11
  6. Step 6: Final answer
    x = 15,486.34

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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.