Home / 11,238.90-16,858.20-8,775.74

Finding the Fourth Proportional to 11,238.90, 16,858.20 and 8,775.74

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Solution

The fourth proportional to 11,238.90, 16,858.20 and 8,775.74 is: 13,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.90 : 16,858.20 = 8,775.74 : x
  2. Step 2: Convert to fraction form
    11,238.90/16,858.20 = 8,775.74/x
  3. Step 3: Cross multiply
    11,238.90x = 16,858.20 × 8,775.74
  4. Step 4: Simplify right side
    11,238.90x = 147,943,180.07
  5. Step 5: Solve for x
    x = 147,943,180.07/11,238.90
  6. Step 6: Final answer
    x = 13,163.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.