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Finding the Fourth Proportional to 11,998.68, 18,007.26 and 7,837.56

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Solution

The fourth proportional to 11,998.68, 18,007.26 and 7,837.56 is: 11,762.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.68 : 18,007.26 = 7,837.56 : x
  2. Step 2: Convert to fraction form
    11,998.68/18,007.26 = 7,837.56/x
  3. Step 3: Cross multiply
    11,998.68x = 18,007.26 × 7,837.56
  4. Step 4: Simplify right side
    11,998.68x = 141,132,980.69
  5. Step 5: Solve for x
    x = 141,132,980.69/11,998.68
  6. Step 6: Final answer
    x = 11,762.38

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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.