Home / 11,427.56-15,769.41-6,390.77

Finding the Fourth Proportional to 11,427.56, 15,769.41 and 6,390.77

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Solution

The fourth proportional to 11,427.56, 15,769.41 and 6,390.77 is: 8,818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.56 : 15,769.41 = 6,390.77 : x
  2. Step 2: Convert to fraction form
    11,427.56/15,769.41 = 6,390.77/x
  3. Step 3: Cross multiply
    11,427.56x = 15,769.41 × 6,390.77
  4. Step 4: Simplify right side
    11,427.56x = 100,778,672.35
  5. Step 5: Solve for x
    x = 100,778,672.35/11,427.56
  6. Step 6: Final answer
    x = 8,818.91

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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.