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Finding the Fourth Proportional to 13,480.60, 20,220.96 and 7,363.48

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Solution

The fourth proportional to 13,480.60, 20,220.96 and 7,363.48 is: 11,045.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.60 : 20,220.96 = 7,363.48 : x
  2. Step 2: Convert to fraction form
    13,480.60/20,220.96 = 7,363.48/x
  3. Step 3: Cross multiply
    13,480.60x = 20,220.96 × 7,363.48
  4. Step 4: Simplify right side
    13,480.60x = 148,896,634.54
  5. Step 5: Solve for x
    x = 148,896,634.54/13,480.60
  6. Step 6: Final answer
    x = 11,045.25

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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.