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Finding the Fourth Proportional to 14,588.80, 20,128.80 and 8,843.20

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Solution

The fourth proportional to 14,588.80, 20,128.80 and 8,843.20 is: 12,201.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,588.80 : 20,128.80 = 8,843.20 : x
  2. Step 2: Convert to fraction form
    14,588.80/20,128.80 = 8,843.20/x
  3. Step 3: Cross multiply
    14,588.80x = 20,128.80 × 8,843.20
  4. Step 4: Simplify right side
    14,588.80x = 178,003,004.16
  5. Step 5: Solve for x
    x = 178,003,004.16/14,588.80
  6. Step 6: Final answer
    x = 12,201.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.