Home / 11,143.28-15,377.85-6,107.39

Finding the Fourth Proportional to 11,143.28, 15,377.85 and 6,107.39

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Solution

The fourth proportional to 11,143.28, 15,377.85 and 6,107.39 is: 8,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.28 : 15,377.85 = 6,107.39 : x
  2. Step 2: Convert to fraction form
    11,143.28/15,377.85 = 6,107.39/x
  3. Step 3: Cross multiply
    11,143.28x = 15,377.85 × 6,107.39
  4. Step 4: Simplify right side
    11,143.28x = 93,918,490.91
  5. Step 5: Solve for x
    x = 93,918,490.91/11,143.28
  6. Step 6: Final answer
    x = 8,428.26

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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.