Home / 11,179.80-15,428.32-6,144.12

Finding the Fourth Proportional to 11,179.80, 15,428.32 and 6,144.12

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Solution

The fourth proportional to 11,179.80, 15,428.32 and 6,144.12 is: 8,478.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.80 : 15,428.32 = 6,144.12 : x
  2. Step 2: Convert to fraction form
    11,179.80/15,428.32 = 6,144.12/x
  3. Step 3: Cross multiply
    11,179.80x = 15,428.32 × 6,144.12
  4. Step 4: Simplify right side
    11,179.80x = 94,793,449.48
  5. Step 5: Solve for x
    x = 94,793,449.48/11,179.80
  6. Step 6: Final answer
    x = 8,478.99

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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.