Home / 13,200.36-19,831.50-12,453.12

Finding the Fourth Proportional to 13,200.36, 19,831.50 and 12,453.12

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Solution

The fourth proportional to 13,200.36, 19,831.50 and 12,453.12 is: 18,708.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.36 : 19,831.50 = 12,453.12 : x
  2. Step 2: Convert to fraction form
    13,200.36/19,831.50 = 12,453.12/x
  3. Step 3: Cross multiply
    13,200.36x = 19,831.50 × 12,453.12
  4. Step 4: Simplify right side
    13,200.36x = 246,964,049.28
  5. Step 5: Solve for x
    x = 246,964,049.28/13,200.36
  6. Step 6: Final answer
    x = 18,708.89

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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.