Home / 12,125.76-18,188.87-3,805.58

Finding the Fourth Proportional to 12,125.76, 18,188.87 and 3,805.58

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Solution

The fourth proportional to 12,125.76, 18,188.87 and 3,805.58 is: 5,708.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.76 : 18,188.87 = 3,805.58 : x
  2. Step 2: Convert to fraction form
    12,125.76/18,188.87 = 3,805.58/x
  3. Step 3: Cross multiply
    12,125.76x = 18,188.87 × 3,805.58
  4. Step 4: Simplify right side
    12,125.76x = 69,219,089.92
  5. Step 5: Solve for x
    x = 69,219,089.92/12,125.76
  6. Step 6: Final answer
    x = 5,708.43

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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.