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Finding the Fourth Proportional to 11,164.99, 16,747.27 and 9,421.15

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Solution

The fourth proportional to 11,164.99, 16,747.27 and 9,421.15 is: 14,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.99 : 16,747.27 = 9,421.15 : x
  2. Step 2: Convert to fraction form
    11,164.99/16,747.27 = 9,421.15/x
  3. Step 3: Cross multiply
    11,164.99x = 16,747.27 × 9,421.15
  4. Step 4: Simplify right side
    11,164.99x = 157,778,542.76
  5. Step 5: Solve for x
    x = 157,778,542.76/11,164.99
  6. Step 6: Final answer
    x = 14,131.54

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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.