Home / 13,545.72-20,318.94-4,778.64

Finding the Fourth Proportional to 13,545.72, 20,318.94 and 4,778.64

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Solution

The fourth proportional to 13,545.72, 20,318.94 and 4,778.64 is: 7,168.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.72 : 20,318.94 = 4,778.64 : x
  2. Step 2: Convert to fraction form
    13,545.72/20,318.94 = 4,778.64/x
  3. Step 3: Cross multiply
    13,545.72x = 20,318.94 × 4,778.64
  4. Step 4: Simplify right side
    13,545.72x = 97,096,899.44
  5. Step 5: Solve for x
    x = 97,096,899.44/13,545.72
  6. Step 6: Final answer
    x = 7,168.09

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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.