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Finding the Fourth Proportional to 14,999.90, 20,701.14 and 8,286.26

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Solution

The fourth proportional to 14,999.90, 20,701.14 and 8,286.26 is: 11,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,999.90 : 20,701.14 = 8,286.26 : x
  2. Step 2: Convert to fraction form
    14,999.90/20,701.14 = 8,286.26/x
  3. Step 3: Cross multiply
    14,999.90x = 20,701.14 × 8,286.26
  4. Step 4: Simplify right side
    14,999.90x = 171,535,080.09
  5. Step 5: Solve for x
    x = 171,535,080.09/14,999.90
  6. Step 6: Final answer
    x = 11,435.75

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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.