Home / 11,435.55-15,788.84-8,778.27

Finding the Fourth Proportional to 11,435.55, 15,788.84 and 8,778.27

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Solution

The fourth proportional to 11,435.55, 15,788.84 and 8,778.27 is: 12,119.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.55 : 15,788.84 = 8,778.27 : x
  2. Step 2: Convert to fraction form
    11,435.55/15,788.84 = 8,778.27/x
  3. Step 3: Cross multiply
    11,435.55x = 15,788.84 × 8,778.27
  4. Step 4: Simplify right side
    11,435.55x = 138,598,656.62
  5. Step 5: Solve for x
    x = 138,598,656.62/11,435.55
  6. Step 6: Final answer
    x = 12,119.98

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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.