Home / 11,190.78-15,443.10-6,154.94

Finding the Fourth Proportional to 11,190.78, 15,443.10 and 6,154.94

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Solution

The fourth proportional to 11,190.78, 15,443.10 and 6,154.94 is: 8,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.78 : 15,443.10 = 6,154.94 : x
  2. Step 2: Convert to fraction form
    11,190.78/15,443.10 = 6,154.94/x
  3. Step 3: Cross multiply
    11,190.78x = 15,443.10 × 6,154.94
  4. Step 4: Simplify right side
    11,190.78x = 95,051,392.52
  5. Step 5: Solve for x
    x = 95,051,392.52/11,190.78
  6. Step 6: Final answer
    x = 8,493.72

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Half scale
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Double scale
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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.