Home / 12,151.36-18,216.10-6,290.20

Finding the Fourth Proportional to 12,151.36, 18,216.10 and 6,290.20

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Solution

The fourth proportional to 12,151.36, 18,216.10 and 6,290.20 is: 9,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.36 : 18,216.10 = 6,290.20 : x
  2. Step 2: Convert to fraction form
    12,151.36/18,216.10 = 6,290.20/x
  3. Step 3: Cross multiply
    12,151.36x = 18,216.10 × 6,290.20
  4. Step 4: Simplify right side
    12,151.36x = 114,582,850.95
  5. Step 5: Solve for x
    x = 114,582,850.95/12,151.36
  6. Step 6: Final answer
    x = 9,429.63

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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.