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Finding the Fourth Proportional to 20,793.80, 28,695.47 and 11,362.37

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Solution

The fourth proportional to 20,793.80, 28,695.47 and 11,362.37 is: 15,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.80 : 28,695.47 = 11,362.37 : x
  2. Step 2: Convert to fraction form
    20,793.80/28,695.47 = 11,362.37/x
  3. Step 3: Cross multiply
    20,793.80x = 28,695.47 × 11,362.37
  4. Step 4: Simplify right side
    20,793.80x = 326,048,347.17
  5. Step 5: Solve for x
    x = 326,048,347.17/20,793.80
  6. Step 6: Final answer
    x = 15,680.07

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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.