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Finding the Fourth Proportional to 12,009.60, 17,991.84 and 4,609.04

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Solution

The fourth proportional to 12,009.60, 17,991.84 and 4,609.04 is: 6,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.60 : 17,991.84 = 4,609.04 : x
  2. Step 2: Convert to fraction form
    12,009.60/17,991.84 = 4,609.04/x
  3. Step 3: Cross multiply
    12,009.60x = 17,991.84 × 4,609.04
  4. Step 4: Simplify right side
    12,009.60x = 82,925,110.23
  5. Step 5: Solve for x
    x = 82,925,110.23/12,009.60
  6. Step 6: Final answer
    x = 6,904.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.