Home / 12,565.38-18,840.89-5,163.75

Finding the Fourth Proportional to 12,565.38, 18,840.89 and 5,163.75

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Solution

The fourth proportional to 12,565.38, 18,840.89 and 5,163.75 is: 7,742.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,565.38 : 18,840.89 = 5,163.75 : x
  2. Step 2: Convert to fraction form
    12,565.38/18,840.89 = 5,163.75/x
  3. Step 3: Cross multiply
    12,565.38x = 18,840.89 × 5,163.75
  4. Step 4: Simplify right side
    12,565.38x = 97,289,651.39
  5. Step 5: Solve for x
    x = 97,289,651.39/12,565.38
  6. Step 6: Final answer
    x = 7,742.68

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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.