Home / 13,965.56-20,920.29-6,458.60

Finding the Fourth Proportional to 13,965.56, 20,920.29 and 6,458.60

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Solution

The fourth proportional to 13,965.56, 20,920.29 and 6,458.60 is: 9,674.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.56 : 20,920.29 = 6,458.60 : x
  2. Step 2: Convert to fraction form
    13,965.56/20,920.29 = 6,458.60/x
  3. Step 3: Cross multiply
    13,965.56x = 20,920.29 × 6,458.60
  4. Step 4: Simplify right side
    13,965.56x = 135,115,680.39
  5. Step 5: Solve for x
    x = 135,115,680.39/13,965.56
  6. Step 6: Final answer
    x = 9,674.92

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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.