Home / 13,438.35-20,135.69-8,233.23

Finding the Fourth Proportional to 13,438.35, 20,135.69 and 8,233.23

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Solution

The fourth proportional to 13,438.35, 20,135.69 and 8,233.23 is: 12,336.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.35 : 20,135.69 = 8,233.23 : x
  2. Step 2: Convert to fraction form
    13,438.35/20,135.69 = 8,233.23/x
  3. Step 3: Cross multiply
    13,438.35x = 20,135.69 × 8,233.23
  4. Step 4: Simplify right side
    13,438.35x = 165,781,725.81
  5. Step 5: Solve for x
    x = 165,781,725.81/13,438.35
  6. Step 6: Final answer
    x = 12,336.46

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1.5x scale

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.