Home / 13,156.76-18,149.58-8,907.96

Finding the Fourth Proportional to 13,156.76, 18,149.58 and 8,907.96

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Solution

The fourth proportional to 13,156.76, 18,149.58 and 8,907.96 is: 12,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.76 : 18,149.58 = 8,907.96 : x
  2. Step 2: Convert to fraction form
    13,156.76/18,149.58 = 8,907.96/x
  3. Step 3: Cross multiply
    13,156.76x = 18,149.58 × 8,907.96
  4. Step 4: Simplify right side
    13,156.76x = 161,675,732.66
  5. Step 5: Solve for x
    x = 161,675,732.66/13,156.76
  6. Step 6: Final answer
    x = 12,288.42

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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.