Home / 11,179.60-15,428.12-6,143.93

Finding the Fourth Proportional to 11,179.60, 15,428.12 and 6,143.93

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Solution

The fourth proportional to 11,179.60, 15,428.12 and 6,143.93 is: 8,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.60 : 15,428.12 = 6,143.93 : x
  2. Step 2: Convert to fraction form
    11,179.60/15,428.12 = 6,143.93/x
  3. Step 3: Cross multiply
    11,179.60x = 15,428.12 × 6,143.93
  4. Step 4: Simplify right side
    11,179.60x = 94,789,360.65
  5. Step 5: Solve for x
    x = 94,789,360.65/11,179.60
  6. Step 6: Final answer
    x = 8,478.78

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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.