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Finding the Fourth Proportional to 9,127.96, 13,625.91 and 8,020.79

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Solution

The fourth proportional to 9,127.96, 13,625.91 and 8,020.79 is: 11,973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,127.96 : 13,625.91 = 8,020.79 : x
  2. Step 2: Convert to fraction form
    9,127.96/13,625.91 = 8,020.79/x
  3. Step 3: Cross multiply
    9,127.96x = 13,625.91 × 8,020.79
  4. Step 4: Simplify right side
    9,127.96x = 109,290,508.55
  5. Step 5: Solve for x
    x = 109,290,508.55/9,127.96
  6. Step 6: Final answer
    x = 11,973.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.