Home / 20,865.06-28,793.79-12,481.56

Finding the Fourth Proportional to 20,865.06, 28,793.79 and 12,481.56

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Solution

The fourth proportional to 20,865.06, 28,793.79 and 12,481.56 is: 17,224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.06 : 28,793.79 = 12,481.56 : x
  2. Step 2: Convert to fraction form
    20,865.06/28,793.79 = 12,481.56/x
  3. Step 3: Cross multiply
    20,865.06x = 28,793.79 × 12,481.56
  4. Step 4: Simplify right side
    20,865.06x = 359,391,417.51
  5. Step 5: Solve for x
    x = 359,391,417.51/20,865.06
  6. Step 6: Final answer
    x = 17,224.56

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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.