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Finding the Fourth Proportional to 8,985.84, 13,527.28 and 8,081.65

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Solution

The fourth proportional to 8,985.84, 13,527.28 and 8,081.65 is: 12,166.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.84 : 13,527.28 = 8,081.65 : x
  2. Step 2: Convert to fraction form
    8,985.84/13,527.28 = 8,081.65/x
  3. Step 3: Cross multiply
    8,985.84x = 13,527.28 × 8,081.65
  4. Step 4: Simplify right side
    8,985.84x = 109,322,708.65
  5. Step 5: Solve for x
    x = 109,322,708.65/8,985.84
  6. Step 6: Final answer
    x = 12,166.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.