Home / 20,396.75-28,148.11-11,444.12

Finding the Fourth Proportional to 20,396.75, 28,148.11 and 11,444.12

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Solution

The fourth proportional to 20,396.75, 28,148.11 and 11,444.12 is: 15,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.75 : 28,148.11 = 11,444.12 : x
  2. Step 2: Convert to fraction form
    20,396.75/28,148.11 = 11,444.12/x
  3. Step 3: Cross multiply
    20,396.75x = 28,148.11 × 11,444.12
  4. Step 4: Simplify right side
    20,396.75x = 322,130,284.82
  5. Step 5: Solve for x
    x = 322,130,284.82/20,396.75
  6. Step 6: Final answer
    x = 15,793.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.