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Finding the Fourth Proportional to 12,102.70, 16,701.20 and 7,067.20

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Solution

The fourth proportional to 12,102.70, 16,701.20 and 7,067.20 is: 9,752.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.70 : 16,701.20 = 7,067.20 : x
  2. Step 2: Convert to fraction form
    12,102.70/16,701.20 = 7,067.20/x
  3. Step 3: Cross multiply
    12,102.70x = 16,701.20 × 7,067.20
  4. Step 4: Simplify right side
    12,102.70x = 118,030,720.64
  5. Step 5: Solve for x
    x = 118,030,720.64/12,102.70
  6. Step 6: Final answer
    x = 9,752.43

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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.