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Finding the Fourth Proportional to 15,107.94, 20,845.22 and 9,433.89

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Solution

The fourth proportional to 15,107.94, 20,845.22 and 9,433.89 is: 13,016.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.94 : 20,845.22 = 9,433.89 : x
  2. Step 2: Convert to fraction form
    15,107.94/20,845.22 = 9,433.89/x
  3. Step 3: Cross multiply
    15,107.94x = 20,845.22 × 9,433.89
  4. Step 4: Simplify right side
    15,107.94x = 196,651,465.34
  5. Step 5: Solve for x
    x = 196,651,465.34/15,107.94
  6. Step 6: Final answer
    x = 13,016.43

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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.