Home / 11,427.19-15,769.76-6,390.86

Finding the Fourth Proportional to 11,427.19, 15,769.76 and 6,390.86

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Solution

The fourth proportional to 11,427.19, 15,769.76 and 6,390.86 is: 8,819.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.19 : 15,769.76 = 6,390.86 : x
  2. Step 2: Convert to fraction form
    11,427.19/15,769.76 = 6,390.86/x
  3. Step 3: Cross multiply
    11,427.19x = 15,769.76 × 6,390.86
  4. Step 4: Simplify right side
    11,427.19x = 100,782,335.86
  5. Step 5: Solve for x
    x = 100,782,335.86/11,427.19
  6. Step 6: Final answer
    x = 8,819.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.