Home / 13,200.61-19,831.88-12,453.37

Finding the Fourth Proportional to 13,200.61, 19,831.88 and 12,453.37

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Solution

The fourth proportional to 13,200.61, 19,831.88 and 12,453.37 is: 18,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.61 : 19,831.88 = 12,453.37 : x
  2. Step 2: Convert to fraction form
    13,200.61/19,831.88 = 12,453.37/x
  3. Step 3: Cross multiply
    13,200.61x = 19,831.88 × 12,453.37
  4. Step 4: Simplify right side
    13,200.61x = 246,973,739.44
  5. Step 5: Solve for x
    x = 246,973,739.44/13,200.61
  6. Step 6: Final answer
    x = 18,709.27

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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.