Home / 13,115.21-19,683.18-5,724.86

Finding the Fourth Proportional to 13,115.21, 19,683.18 and 5,724.86

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Solution

The fourth proportional to 13,115.21, 19,683.18 and 5,724.86 is: 8,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.21 : 19,683.18 = 5,724.86 : x
  2. Step 2: Convert to fraction form
    13,115.21/19,683.18 = 5,724.86/x
  3. Step 3: Cross multiply
    13,115.21x = 19,683.18 × 5,724.86
  4. Step 4: Simplify right side
    13,115.21x = 112,683,449.85
  5. Step 5: Solve for x
    x = 112,683,449.85/13,115.21
  6. Step 6: Final answer
    x = 8,591.81

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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.