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Finding the Fourth Proportional to 20,015.30, 29,982.76 and 9,326.54

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Solution

The fourth proportional to 20,015.30, 29,982.76 and 9,326.54 is: 13,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.30 : 29,982.76 = 9,326.54 : x
  2. Step 2: Convert to fraction form
    20,015.30/29,982.76 = 9,326.54/x
  3. Step 3: Cross multiply
    20,015.30x = 29,982.76 × 9,326.54
  4. Step 4: Simplify right side
    20,015.30x = 279,635,462.09
  5. Step 5: Solve for x
    x = 279,635,462.09/20,015.30
  6. Step 6: Final answer
    x = 13,971.08

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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.