Home / 13,480.20-20,220.30-11,341.80

Finding the Fourth Proportional to 13,480.20, 20,220.30 and 11,341.80

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Solution

The fourth proportional to 13,480.20, 20,220.30 and 11,341.80 is: 17,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.20 : 20,220.30 = 11,341.80 : x
  2. Step 2: Convert to fraction form
    13,480.20/20,220.30 = 11,341.80/x
  3. Step 3: Cross multiply
    13,480.20x = 20,220.30 × 11,341.80
  4. Step 4: Simplify right side
    13,480.20x = 229,334,598.54
  5. Step 5: Solve for x
    x = 229,334,598.54/13,480.20
  6. Step 6: Final answer
    x = 17,012.70

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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.