Home / 20,407.82-30,600.79-9,308.52

Finding the Fourth Proportional to 20,407.82, 30,600.79 and 9,308.52

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Solution

The fourth proportional to 20,407.82, 30,600.79 and 9,308.52 is: 13,957.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.82 : 30,600.79 = 9,308.52 : x
  2. Step 2: Convert to fraction form
    20,407.82/30,600.79 = 9,308.52/x
  3. Step 3: Cross multiply
    20,407.82x = 30,600.79 × 9,308.52
  4. Step 4: Simplify right side
    20,407.82x = 284,848,042.46
  5. Step 5: Solve for x
    x = 284,848,042.46/20,407.82
  6. Step 6: Final answer
    x = 13,957.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.