Home / 12,250.06-18,386.39-7,579.20

Finding the Fourth Proportional to 12,250.06, 18,386.39 and 7,579.20

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Solution

The fourth proportional to 12,250.06, 18,386.39 and 7,579.20 is: 11,375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,250.06 : 18,386.39 = 7,579.20 : x
  2. Step 2: Convert to fraction form
    12,250.06/18,386.39 = 7,579.20/x
  3. Step 3: Cross multiply
    12,250.06x = 18,386.39 × 7,579.20
  4. Step 4: Simplify right side
    12,250.06x = 139,354,127.09
  5. Step 5: Solve for x
    x = 139,354,127.09/12,250.06
  6. Step 6: Final answer
    x = 11,375.79

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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.