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Finding the Fourth Proportional to 18,708.26, 28,067.26 and 9,347.90

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Solution

The fourth proportional to 18,708.26, 28,067.26 and 9,347.90 is: 14,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.26 : 28,067.26 = 9,347.90 : x
  2. Step 2: Convert to fraction form
    18,708.26/28,067.26 = 9,347.90/x
  3. Step 3: Cross multiply
    18,708.26x = 28,067.26 × 9,347.90
  4. Step 4: Simplify right side
    18,708.26x = 262,369,893.01
  5. Step 5: Solve for x
    x = 262,369,893.01/18,708.26
  6. Step 6: Final answer
    x = 14,024.28

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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.