Home / 13,740.76-20,601.96-5,415.58

Finding the Fourth Proportional to 13,740.76, 20,601.96 and 5,415.58

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Solution

The fourth proportional to 13,740.76, 20,601.96 and 5,415.58 is: 8,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.76 : 20,601.96 = 5,415.58 : x
  2. Step 2: Convert to fraction form
    13,740.76/20,601.96 = 5,415.58/x
  3. Step 3: Cross multiply
    13,740.76x = 20,601.96 × 5,415.58
  4. Step 4: Simplify right side
    13,740.76x = 111,571,562.54
  5. Step 5: Solve for x
    x = 111,571,562.54/13,740.76
  6. Step 6: Final answer
    x = 8,119.75

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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.