Home / 12,649.77-18,949.28-11,616.35

Finding the Fourth Proportional to 12,649.77, 18,949.28 and 11,616.35

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Solution

The fourth proportional to 12,649.77, 18,949.28 and 11,616.35 is: 17,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.77 : 18,949.28 = 11,616.35 : x
  2. Step 2: Convert to fraction form
    12,649.77/18,949.28 = 11,616.35/x
  3. Step 3: Cross multiply
    12,649.77x = 18,949.28 × 11,616.35
  4. Step 4: Simplify right side
    12,649.77x = 220,121,315.90
  5. Step 5: Solve for x
    x = 220,121,315.90/12,649.77
  6. Step 6: Final answer
    x = 17,401.21

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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.