Home / 20,612.94-28,445.86-11,660.25

Finding the Fourth Proportional to 20,612.94, 28,445.86 and 11,660.25

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Solution

The fourth proportional to 20,612.94, 28,445.86 and 11,660.25 is: 16,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.94 : 28,445.86 = 11,660.25 : x
  2. Step 2: Convert to fraction form
    20,612.94/28,445.86 = 11,660.25/x
  3. Step 3: Cross multiply
    20,612.94x = 28,445.86 × 11,660.25
  4. Step 4: Simplify right side
    20,612.94x = 331,685,800.30
  5. Step 5: Solve for x
    x = 331,685,800.30/20,612.94
  6. Step 6: Final answer
    x = 16,091.15

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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.