Home / 20,495.29-30,742.80-11,723.98

Finding the Fourth Proportional to 20,495.29, 30,742.80 and 11,723.98

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Solution

The fourth proportional to 20,495.29, 30,742.80 and 11,723.98 is: 17,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.29 : 30,742.80 = 11,723.98 : x
  2. Step 2: Convert to fraction form
    20,495.29/30,742.80 = 11,723.98/x
  3. Step 3: Cross multiply
    20,495.29x = 30,742.80 × 11,723.98
  4. Step 4: Simplify right side
    20,495.29x = 360,427,972.34
  5. Step 5: Solve for x
    x = 360,427,972.34/20,495.29
  6. Step 6: Final answer
    x = 17,585.89

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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.