Home / 13,440.30-20,112.45-8,512.30

Finding the Fourth Proportional to 13,440.30, 20,112.45 and 8,512.30

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Solution

The fourth proportional to 13,440.30, 20,112.45 and 8,512.30 is: 12,738.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.30 : 20,112.45 = 8,512.30 : x
  2. Step 2: Convert to fraction form
    13,440.30/20,112.45 = 8,512.30/x
  3. Step 3: Cross multiply
    13,440.30x = 20,112.45 × 8,512.30
  4. Step 4: Simplify right side
    13,440.30x = 171,203,208.14
  5. Step 5: Solve for x
    x = 171,203,208.14/13,440.30
  6. Step 6: Final answer
    x = 12,738.05

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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.