Home / 20,616.86-28,449.54-11,662.30

Finding the Fourth Proportional to 20,616.86, 28,449.54 and 11,662.30

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Solution

The fourth proportional to 20,616.86, 28,449.54 and 11,662.30 is: 16,093.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.86 : 28,449.54 = 11,662.30 : x
  2. Step 2: Convert to fraction form
    20,616.86/28,449.54 = 11,662.30/x
  3. Step 3: Cross multiply
    20,616.86x = 28,449.54 × 11,662.30
  4. Step 4: Simplify right side
    20,616.86x = 331,787,070.34
  5. Step 5: Solve for x
    x = 331,787,070.34/20,616.86
  6. Step 6: Final answer
    x = 16,093.00

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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.