Home / 13,439.45-20,132.56-9,212.30

Finding the Fourth Proportional to 13,439.45, 20,132.56 and 9,212.30

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Solution

The fourth proportional to 13,439.45, 20,132.56 and 9,212.30 is: 13,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.45 : 20,132.56 = 9,212.30 : x
  2. Step 2: Convert to fraction form
    13,439.45/20,132.56 = 9,212.30/x
  3. Step 3: Cross multiply
    13,439.45x = 20,132.56 × 9,212.30
  4. Step 4: Simplify right side
    13,439.45x = 185,467,182.49
  5. Step 5: Solve for x
    x = 185,467,182.49/13,439.45
  6. Step 6: Final answer
    x = 13,800.21

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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.