Home / 13,705.20-20,566.71-5,391.77

Finding the Fourth Proportional to 13,705.20, 20,566.71 and 5,391.77

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Solution

The fourth proportional to 13,705.20, 20,566.71 and 5,391.77 is: 8,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.20 : 20,566.71 = 5,391.77 : x
  2. Step 2: Convert to fraction form
    13,705.20/20,566.71 = 5,391.77/x
  3. Step 3: Cross multiply
    13,705.20x = 20,566.71 × 5,391.77
  4. Step 4: Simplify right side
    13,705.20x = 110,890,867.14
  5. Step 5: Solve for x
    x = 110,890,867.14/13,705.20
  6. Step 6: Final answer
    x = 8,091.15

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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.