Home / 14,379.39-21,571.81-5,613.75

Finding the Fourth Proportional to 14,379.39, 21,571.81 and 5,613.75

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Solution

The fourth proportional to 14,379.39, 21,571.81 and 5,613.75 is: 8,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,379.39 : 21,571.81 = 5,613.75 : x
  2. Step 2: Convert to fraction form
    14,379.39/21,571.81 = 5,613.75/x
  3. Step 3: Cross multiply
    14,379.39x = 21,571.81 × 5,613.75
  4. Step 4: Simplify right side
    14,379.39x = 121,098,734.35
  5. Step 5: Solve for x
    x = 121,098,734.35/14,379.39
  6. Step 6: Final answer
    x = 8,421.69

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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.