Home / 12,188.63-18,279.21-5,168.52

Finding the Fourth Proportional to 12,188.63, 18,279.21 and 5,168.52

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Solution

The fourth proportional to 12,188.63, 18,279.21 and 5,168.52 is: 7,751.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.63 : 18,279.21 = 5,168.52 : x
  2. Step 2: Convert to fraction form
    12,188.63/18,279.21 = 5,168.52/x
  3. Step 3: Cross multiply
    12,188.63x = 18,279.21 × 5,168.52
  4. Step 4: Simplify right side
    12,188.63x = 94,476,462.47
  5. Step 5: Solve for x
    x = 94,476,462.47/12,188.63
  6. Step 6: Final answer
    x = 7,751.19

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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.