Home / 12,279.06-18,420.21-6,039.36

Finding the Fourth Proportional to 12,279.06, 18,420.21 and 6,039.36

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Solution

The fourth proportional to 12,279.06, 18,420.21 and 6,039.36 is: 9,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.06 : 18,420.21 = 6,039.36 : x
  2. Step 2: Convert to fraction form
    12,279.06/18,420.21 = 6,039.36/x
  3. Step 3: Cross multiply
    12,279.06x = 18,420.21 × 6,039.36
  4. Step 4: Simplify right side
    12,279.06x = 111,246,279.47
  5. Step 5: Solve for x
    x = 111,246,279.47/12,279.06
  6. Step 6: Final answer
    x = 9,059.84

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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.