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Finding the Fourth Proportional to 20,437.14, 30,649.62 and 7,959.09

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Solution

The fourth proportional to 20,437.14, 30,649.62 and 7,959.09 is: 11,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.14 : 30,649.62 = 7,959.09 : x
  2. Step 2: Convert to fraction form
    20,437.14/30,649.62 = 7,959.09/x
  3. Step 3: Cross multiply
    20,437.14x = 30,649.62 × 7,959.09
  4. Step 4: Simplify right side
    20,437.14x = 243,943,084.05
  5. Step 5: Solve for x
    x = 243,943,084.05/20,437.14
  6. Step 6: Final answer
    x = 11,936.26

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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.