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Finding the Fourth Proportional to 13,224.70, 19,790.70 and 9,480.60

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Solution

The fourth proportional to 13,224.70, 19,790.70 and 9,480.60 is: 14,187.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.70 : 19,790.70 = 9,480.60 : x
  2. Step 2: Convert to fraction form
    13,224.70/19,790.70 = 9,480.60/x
  3. Step 3: Cross multiply
    13,224.70x = 19,790.70 × 9,480.60
  4. Step 4: Simplify right side
    13,224.70x = 187,627,810.52
  5. Step 5: Solve for x
    x = 187,627,810.52/13,224.70
  6. Step 6: Final answer
    x = 14,187.68

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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.