Home / 13,776.11-20,664.18-5,458.08

Finding the Fourth Proportional to 13,776.11, 20,664.18 and 5,458.08

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Solution

The fourth proportional to 13,776.11, 20,664.18 and 5,458.08 is: 8,187.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.11 : 20,664.18 = 5,458.08 : x
  2. Step 2: Convert to fraction form
    13,776.11/20,664.18 = 5,458.08/x
  3. Step 3: Cross multiply
    13,776.11x = 20,664.18 × 5,458.08
  4. Step 4: Simplify right side
    13,776.11x = 112,786,747.57
  5. Step 5: Solve for x
    x = 112,786,747.57/13,776.11
  6. Step 6: Final answer
    x = 8,187.13

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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.