Home / 13,318.25-19,958.34-9,780.51

Finding the Fourth Proportional to 13,318.25, 19,958.34 and 9,780.51

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Solution

The fourth proportional to 13,318.25, 19,958.34 and 9,780.51 is: 14,656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.25 : 19,958.34 = 9,780.51 : x
  2. Step 2: Convert to fraction form
    13,318.25/19,958.34 = 9,780.51/x
  3. Step 3: Cross multiply
    13,318.25x = 19,958.34 × 9,780.51
  4. Step 4: Simplify right side
    13,318.25x = 195,202,743.95
  5. Step 5: Solve for x
    x = 195,202,743.95/13,318.25
  6. Step 6: Final answer
    x = 14,656.78

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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.