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Finding the Fourth Proportional to 20,097, 30,179.52 and 13,088.88

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Solution

The fourth proportional to 20,097, 30,179.52 and 13,088.88 is: 19,655.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,097 : 30,179.52 = 13,088.88 : x
  2. Step 2: Convert to fraction form
    20,097/30,179.52 = 13,088.88/x
  3. Step 3: Cross multiply
    20,097x = 30,179.52 × 13,088.88
  4. Step 4: Simplify right side
    20,097x = 395,016,115.74
  5. Step 5: Solve for x
    x = 395,016,115.74/20,097
  6. Step 6: Final answer
    x = 19,655.48

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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.