Home / 18,530.40-27,795.60-8,139.36

Finding the Fourth Proportional to 18,530.40, 27,795.60 and 8,139.36

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Solution

The fourth proportional to 18,530.40, 27,795.60 and 8,139.36 is: 12,209.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.40 : 27,795.60 = 8,139.36 : x
  2. Step 2: Convert to fraction form
    18,530.40/27,795.60 = 8,139.36/x
  3. Step 3: Cross multiply
    18,530.40x = 27,795.60 × 8,139.36
  4. Step 4: Simplify right side
    18,530.40x = 226,238,394.82
  5. Step 5: Solve for x
    x = 226,238,394.82/18,530.40
  6. Step 6: Final answer
    x = 12,209.04

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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.