Home / 11,897.78-16,419.36-7,181.14

Finding the Fourth Proportional to 11,897.78, 16,419.36 and 7,181.14

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Solution

The fourth proportional to 11,897.78, 16,419.36 and 7,181.14 is: 9,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.78 : 16,419.36 = 7,181.14 : x
  2. Step 2: Convert to fraction form
    11,897.78/16,419.36 = 7,181.14/x
  3. Step 3: Cross multiply
    11,897.78x = 16,419.36 × 7,181.14
  4. Step 4: Simplify right side
    11,897.78x = 117,909,722.87
  5. Step 5: Solve for x
    x = 117,909,722.87/11,897.78
  6. Step 6: Final answer
    x = 9,910.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.