Home / 20,612.25-28,441.67-11,656.89

Finding the Fourth Proportional to 20,612.25, 28,441.67 and 11,656.89

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Solution

The fourth proportional to 20,612.25, 28,441.67 and 11,656.89 is: 16,084.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.25 : 28,441.67 = 11,656.89 : x
  2. Step 2: Convert to fraction form
    20,612.25/28,441.67 = 11,656.89/x
  3. Step 3: Cross multiply
    20,612.25x = 28,441.67 × 11,656.89
  4. Step 4: Simplify right side
    20,612.25x = 331,541,360.32
  5. Step 5: Solve for x
    x = 331,541,360.32/20,612.25
  6. Step 6: Final answer
    x = 16,084.68

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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.