Home / 13,742.22-18,964.68-7,773.78

Finding the Fourth Proportional to 13,742.22, 18,964.68 and 7,773.78

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Solution

The fourth proportional to 13,742.22, 18,964.68 and 7,773.78 is: 10,728.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.22 : 18,964.68 = 7,773.78 : x
  2. Step 2: Convert to fraction form
    13,742.22/18,964.68 = 7,773.78/x
  3. Step 3: Cross multiply
    13,742.22x = 18,964.68 × 7,773.78
  4. Step 4: Simplify right side
    13,742.22x = 147,427,155.27
  5. Step 5: Solve for x
    x = 147,427,155.27/13,742.22
  6. Step 6: Final answer
    x = 10,728.05

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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.