Home / 13,586.29-20,371.84-6,918.62

Finding the Fourth Proportional to 13,586.29, 20,371.84 and 6,918.62

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Solution

The fourth proportional to 13,586.29, 20,371.84 and 6,918.62 is: 10,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.29 : 20,371.84 = 6,918.62 : x
  2. Step 2: Convert to fraction form
    13,586.29/20,371.84 = 6,918.62/x
  3. Step 3: Cross multiply
    13,586.29x = 20,371.84 × 6,918.62
  4. Step 4: Simplify right side
    13,586.29x = 140,944,900.51
  5. Step 5: Solve for x
    x = 140,944,900.51/13,586.29
  6. Step 6: Final answer
    x = 10,374.06

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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.