Home / 20,565.64-28,379-11,613.94

Finding the Fourth Proportional to 20,565.64, 28,379 and 11,613.94

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Solution

The fourth proportional to 20,565.64, 28,379 and 11,613.94 is: 16,026.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.64 : 28,379 = 11,613.94 : x
  2. Step 2: Convert to fraction form
    20,565.64/28,379 = 11,613.94/x
  3. Step 3: Cross multiply
    20,565.64x = 28,379 × 11,613.94
  4. Step 4: Simplify right side
    20,565.64x = 329,592,003.26
  5. Step 5: Solve for x
    x = 329,592,003.26/20,565.64
  6. Step 6: Final answer
    x = 16,026.34

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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.