Home / 20,564.58-28,379.13-11,133.14

Finding the Fourth Proportional to 20,564.58, 28,379.13 and 11,133.14

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Solution

The fourth proportional to 20,564.58, 28,379.13 and 11,133.14 is: 15,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.58 : 28,379.13 = 11,133.14 : x
  2. Step 2: Convert to fraction form
    20,564.58/28,379.13 = 11,133.14/x
  3. Step 3: Cross multiply
    20,564.58x = 28,379.13 × 11,133.14
  4. Step 4: Simplify right side
    20,564.58x = 315,948,827.37
  5. Step 5: Solve for x
    x = 315,948,827.37/20,564.58
  6. Step 6: Final answer
    x = 15,363.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.