Home / 20,613.08-28,441.33-11,658.63

Finding the Fourth Proportional to 20,613.08, 28,441.33 and 11,658.63

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Solution

The fourth proportional to 20,613.08, 28,441.33 and 11,658.63 is: 16,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.08 : 28,441.33 = 11,658.63 : x
  2. Step 2: Convert to fraction form
    20,613.08/28,441.33 = 11,658.63/x
  3. Step 3: Cross multiply
    20,613.08x = 28,441.33 × 11,658.63
  4. Step 4: Simplify right side
    20,613.08x = 331,587,020.69
  5. Step 5: Solve for x
    x = 331,587,020.69/20,613.08
  6. Step 6: Final answer
    x = 16,086.24

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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.