Home / 12,188.56-18,279.21-5,168.47

Finding the Fourth Proportional to 12,188.56, 18,279.21 and 5,168.47

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Solution

The fourth proportional to 12,188.56, 18,279.21 and 5,168.47 is: 7,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.56 : 18,279.21 = 5,168.47 : x
  2. Step 2: Convert to fraction form
    12,188.56/18,279.21 = 5,168.47/x
  3. Step 3: Cross multiply
    12,188.56x = 18,279.21 × 5,168.47
  4. Step 4: Simplify right side
    12,188.56x = 94,475,431.27
  5. Step 5: Solve for x
    x = 94,475,431.27/12,188.56
  6. Step 6: Final answer
    x = 7,751.16

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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.