Home / 20,112.24-30,187.56-12,336.24

Finding the Fourth Proportional to 20,112.24, 30,187.56 and 12,336.24

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Solution

The fourth proportional to 20,112.24, 30,187.56 and 12,336.24 is: 18,516.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.24 : 30,187.56 = 12,336.24 : x
  2. Step 2: Convert to fraction form
    20,112.24/30,187.56 = 12,336.24/x
  3. Step 3: Cross multiply
    20,112.24x = 30,187.56 × 12,336.24
  4. Step 4: Simplify right side
    20,112.24x = 372,400,985.17
  5. Step 5: Solve for x
    x = 372,400,985.17/20,112.24
  6. Step 6: Final answer
    x = 18,516.14

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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.