Home / 18,070.72-27,106.11-11,869.90

Finding the Fourth Proportional to 18,070.72, 27,106.11 and 11,869.90

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Solution

The fourth proportional to 18,070.72, 27,106.11 and 11,869.90 is: 17,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,070.72 : 27,106.11 = 11,869.90 : x
  2. Step 2: Convert to fraction form
    18,070.72/27,106.11 = 11,869.90/x
  3. Step 3: Cross multiply
    18,070.72x = 27,106.11 × 11,869.90
  4. Step 4: Simplify right side
    18,070.72x = 321,746,815.09
  5. Step 5: Solve for x
    x = 321,746,815.09/18,070.72
  6. Step 6: Final answer
    x = 17,804.87

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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.