Home / 13,691.18-20,437.73-12,030.43

Finding the Fourth Proportional to 13,691.18, 20,437.73 and 12,030.43

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Solution

The fourth proportional to 13,691.18, 20,437.73 and 12,030.43 is: 17,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.18 : 20,437.73 = 12,030.43 : x
  2. Step 2: Convert to fraction form
    13,691.18/20,437.73 = 12,030.43/x
  3. Step 3: Cross multiply
    13,691.18x = 20,437.73 × 12,030.43
  4. Step 4: Simplify right side
    13,691.18x = 245,874,680.12
  5. Step 5: Solve for x
    x = 245,874,680.12/13,691.18
  6. Step 6: Final answer
    x = 17,958.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.