Home / 20,865.10-28,793.46-11,433.46

Finding the Fourth Proportional to 20,865.10, 28,793.46 and 11,433.46

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Solution

The fourth proportional to 20,865.10, 28,793.46 and 11,433.46 is: 15,777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.10 : 28,793.46 = 11,433.46 : x
  2. Step 2: Convert to fraction form
    20,865.10/28,793.46 = 11,433.46/x
  3. Step 3: Cross multiply
    20,865.10x = 28,793.46 × 11,433.46
  4. Step 4: Simplify right side
    20,865.10x = 329,208,873.17
  5. Step 5: Solve for x
    x = 329,208,873.17/20,865.10
  6. Step 6: Final answer
    x = 15,777.97

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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.