Home / 13,724.67-20,683.68-12,409.92

Finding the Fourth Proportional to 13,724.67, 20,683.68 and 12,409.92

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Solution

The fourth proportional to 13,724.67, 20,683.68 and 12,409.92 is: 18,702.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.67 : 20,683.68 = 12,409.92 : x
  2. Step 2: Convert to fraction form
    13,724.67/20,683.68 = 12,409.92/x
  3. Step 3: Cross multiply
    13,724.67x = 20,683.68 × 12,409.92
  4. Step 4: Simplify right side
    13,724.67x = 256,682,814.11
  5. Step 5: Solve for x
    x = 256,682,814.11/13,724.67
  6. Step 6: Final answer
    x = 18,702.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.