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Finding the Fourth Proportional to 11,897.34, 16,418.34 and 7,181.52

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Solution

The fourth proportional to 11,897.34, 16,418.34 and 7,181.52 is: 9,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.34 : 16,418.34 = 7,181.52 : x
  2. Step 2: Convert to fraction form
    11,897.34/16,418.34 = 7,181.52/x
  3. Step 3: Cross multiply
    11,897.34x = 16,418.34 × 7,181.52
  4. Step 4: Simplify right side
    11,897.34x = 117,908,637.08
  5. Step 5: Solve for x
    x = 117,908,637.08/11,897.34
  6. Step 6: Final answer
    x = 9,910.50

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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.