Home / 13,438.26-20,166.16-5,118.35

Finding the Fourth Proportional to 13,438.26, 20,166.16 and 5,118.35

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Solution

The fourth proportional to 13,438.26, 20,166.16 and 5,118.35 is: 7,680.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.26 : 20,166.16 = 5,118.35 : x
  2. Step 2: Convert to fraction form
    13,438.26/20,166.16 = 5,118.35/x
  3. Step 3: Cross multiply
    13,438.26x = 20,166.16 × 5,118.35
  4. Step 4: Simplify right side
    13,438.26x = 103,217,528.25
  5. Step 5: Solve for x
    x = 103,217,528.25/13,438.26
  6. Step 6: Final answer
    x = 7,680.87

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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.