Home / 20,565.72-28,379.43-11,613.60

Finding the Fourth Proportional to 20,565.72, 28,379.43 and 11,613.60

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Solution

The fourth proportional to 20,565.72, 28,379.43 and 11,613.60 is: 16,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.72 : 28,379.43 = 11,613.60 : x
  2. Step 2: Convert to fraction form
    20,565.72/28,379.43 = 11,613.60/x
  3. Step 3: Cross multiply
    20,565.72x = 28,379.43 × 11,613.60
  4. Step 4: Simplify right side
    20,565.72x = 329,587,348.25
  5. Step 5: Solve for x
    x = 329,587,348.25/20,565.72
  6. Step 6: Final answer
    x = 16,026.05

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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.