Home / 20,793.12-28,695.51-11,362.56

Finding the Fourth Proportional to 20,793.12, 28,695.51 and 11,362.56

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Solution

The fourth proportional to 20,793.12, 28,695.51 and 11,362.56 is: 15,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.12 : 28,695.51 = 11,362.56 : x
  2. Step 2: Convert to fraction form
    20,793.12/28,695.51 = 11,362.56/x
  3. Step 3: Cross multiply
    20,793.12x = 28,695.51 × 11,362.56
  4. Step 4: Simplify right side
    20,793.12x = 326,054,454.11
  5. Step 5: Solve for x
    x = 326,054,454.11/20,793.12
  6. Step 6: Final answer
    x = 15,680.88

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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.