Home / 20,564.69-28,379.86-11,613.54

Finding the Fourth Proportional to 20,564.69, 28,379.86 and 11,613.54

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Solution

The fourth proportional to 20,564.69, 28,379.86 and 11,613.54 is: 16,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.69 : 28,379.86 = 11,613.54 : x
  2. Step 2: Convert to fraction form
    20,564.69/28,379.86 = 11,613.54/x
  3. Step 3: Cross multiply
    20,564.69x = 28,379.86 × 11,613.54
  4. Step 4: Simplify right side
    20,564.69x = 329,590,580.64
  5. Step 5: Solve for x
    x = 329,590,580.64/20,564.69
  6. Step 6: Final answer
    x = 16,027.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.