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Finding the Fourth Proportional to 20,273.58, 30,388.84 and 11,957.51

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Solution

The fourth proportional to 20,273.58, 30,388.84 and 11,957.51 is: 17,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.58 : 30,388.84 = 11,957.51 : x
  2. Step 2: Convert to fraction form
    20,273.58/30,388.84 = 11,957.51/x
  3. Step 3: Cross multiply
    20,273.58x = 30,388.84 × 11,957.51
  4. Step 4: Simplify right side
    20,273.58x = 363,374,858.19
  5. Step 5: Solve for x
    x = 363,374,858.19/20,273.58
  6. Step 6: Final answer
    x = 17,923.57

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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.