Home / 20,593.61-28,418.99-11,518.86

Finding the Fourth Proportional to 20,593.61, 28,418.99 and 11,518.86

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Solution

The fourth proportional to 20,593.61, 28,418.99 and 11,518.86 is: 15,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.61 : 28,418.99 = 11,518.86 : x
  2. Step 2: Convert to fraction form
    20,593.61/28,418.99 = 11,518.86/x
  3. Step 3: Cross multiply
    20,593.61x = 28,418.99 × 11,518.86
  4. Step 4: Simplify right side
    20,593.61x = 327,354,367.15
  5. Step 5: Solve for x
    x = 327,354,367.15/20,593.61
  6. Step 6: Final answer
    x = 15,895.92

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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.