Home / 11,897.07-16,419.57-6,861.21

Finding the Fourth Proportional to 11,897.07, 16,419.57 and 6,861.21

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Solution

The fourth proportional to 11,897.07, 16,419.57 and 6,861.21 is: 9,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.07 : 16,419.57 = 6,861.21 : x
  2. Step 2: Convert to fraction form
    11,897.07/16,419.57 = 6,861.21/x
  3. Step 3: Cross multiply
    11,897.07x = 16,419.57 × 6,861.21
  4. Step 4: Simplify right side
    11,897.07x = 112,658,117.88
  5. Step 5: Solve for x
    x = 112,658,117.88/11,897.07
  6. Step 6: Final answer
    x = 9,469.40

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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.