Home / 20,644.08-28,481.40-12,260.40

Finding the Fourth Proportional to 20,644.08, 28,481.40 and 12,260.40

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Solution

The fourth proportional to 20,644.08, 28,481.40 and 12,260.40 is: 16,914.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.08 : 28,481.40 = 12,260.40 : x
  2. Step 2: Convert to fraction form
    20,644.08/28,481.40 = 12,260.40/x
  3. Step 3: Cross multiply
    20,644.08x = 28,481.40 × 12,260.40
  4. Step 4: Simplify right side
    20,644.08x = 349,193,356.56
  5. Step 5: Solve for x
    x = 349,193,356.56/20,644.08
  6. Step 6: Final answer
    x = 16,914.94

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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.