Home / 11,137.12-15,369.61-6,101.78

Finding the Fourth Proportional to 11,137.12, 15,369.61 and 6,101.78

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Solution

The fourth proportional to 11,137.12, 15,369.61 and 6,101.78 is: 8,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.12 : 15,369.61 = 6,101.78 : x
  2. Step 2: Convert to fraction form
    11,137.12/15,369.61 = 6,101.78/x
  3. Step 3: Cross multiply
    11,137.12x = 15,369.61 × 6,101.78
  4. Step 4: Simplify right side
    11,137.12x = 93,781,871.55
  5. Step 5: Solve for x
    x = 93,781,871.55/11,137.12
  6. Step 6: Final answer
    x = 8,420.66

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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.