Home / 11,897.40-16,418.16-6,861.60

Finding the Fourth Proportional to 11,897.40, 16,418.16 and 6,861.60

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Solution

The fourth proportional to 11,897.40, 16,418.16 and 6,861.60 is: 9,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.40 : 16,418.16 = 6,861.60 : x
  2. Step 2: Convert to fraction form
    11,897.40/16,418.16 = 6,861.60/x
  3. Step 3: Cross multiply
    11,897.40x = 16,418.16 × 6,861.60
  4. Step 4: Simplify right side
    11,897.40x = 112,654,846.66
  5. Step 5: Solve for x
    x = 112,654,846.66/11,897.40
  6. Step 6: Final answer
    x = 9,468.86

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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.