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Finding the Fourth Proportional to 9,992.21, 13,790.93 and 9,549.35

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Solution

The fourth proportional to 9,992.21, 13,790.93 and 9,549.35 is: 13,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.21 : 13,790.93 = 9,549.35 : x
  2. Step 2: Convert to fraction form
    9,992.21/13,790.93 = 9,549.35/x
  3. Step 3: Cross multiply
    9,992.21x = 13,790.93 × 9,549.35
  4. Step 4: Simplify right side
    9,992.21x = 131,694,300.69
  5. Step 5: Solve for x
    x = 131,694,300.69/9,992.21
  6. Step 6: Final answer
    x = 13,179.70

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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.