Home / 13,438.38-20,166.35-5,118.48

Finding the Fourth Proportional to 13,438.38, 20,166.35 and 5,118.48

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Solution

The fourth proportional to 13,438.38, 20,166.35 and 5,118.48 is: 7,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.38 : 20,166.35 = 5,118.48 : x
  2. Step 2: Convert to fraction form
    13,438.38/20,166.35 = 5,118.48/x
  3. Step 3: Cross multiply
    13,438.38x = 20,166.35 × 5,118.48
  4. Step 4: Simplify right side
    13,438.38x = 103,221,008.73
  5. Step 5: Solve for x
    x = 103,221,008.73/13,438.38
  6. Step 6: Final answer
    x = 7,681.06

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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.