Home / 20,219.50-27,905.37-12,261.70

Finding the Fourth Proportional to 20,219.50, 27,905.37 and 12,261.70

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Solution

The fourth proportional to 20,219.50, 27,905.37 and 12,261.70 is: 16,922.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.50 : 27,905.37 = 12,261.70 : x
  2. Step 2: Convert to fraction form
    20,219.50/27,905.37 = 12,261.70/x
  3. Step 3: Cross multiply
    20,219.50x = 27,905.37 × 12,261.70
  4. Step 4: Simplify right side
    20,219.50x = 342,167,275.33
  5. Step 5: Solve for x
    x = 342,167,275.33/20,219.50
  6. Step 6: Final answer
    x = 16,922.64

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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.