Home / 11,179.51-15,428.13-6,143.94

Finding the Fourth Proportional to 11,179.51, 15,428.13 and 6,143.94

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Solution

The fourth proportional to 11,179.51, 15,428.13 and 6,143.94 is: 8,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.51 : 15,428.13 = 6,143.94 : x
  2. Step 2: Convert to fraction form
    11,179.51/15,428.13 = 6,143.94/x
  3. Step 3: Cross multiply
    11,179.51x = 15,428.13 × 6,143.94
  4. Step 4: Simplify right side
    11,179.51x = 94,789,505.03
  5. Step 5: Solve for x
    x = 94,789,505.03/11,179.51
  6. Step 6: Final answer
    x = 8,478.86

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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.