Home / 11,152.76-15,390.68-6,436.94

Finding the Fourth Proportional to 11,152.76, 15,390.68 and 6,436.94

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Solution

The fourth proportional to 11,152.76, 15,390.68 and 6,436.94 is: 8,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.76 : 15,390.68 = 6,436.94 : x
  2. Step 2: Convert to fraction form
    11,152.76/15,390.68 = 6,436.94/x
  3. Step 3: Cross multiply
    11,152.76x = 15,390.68 × 6,436.94
  4. Step 4: Simplify right side
    11,152.76x = 99,068,774.58
  5. Step 5: Solve for x
    x = 99,068,774.58/11,152.76
  6. Step 6: Final answer
    x = 8,882.90

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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.