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Finding the Fourth Proportional to 11,919.03, 16,468.10 and 9,420.33

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Solution

The fourth proportional to 11,919.03, 16,468.10 and 9,420.33 is: 13,015.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.03 : 16,468.10 = 9,420.33 : x
  2. Step 2: Convert to fraction form
    11,919.03/16,468.10 = 9,420.33/x
  3. Step 3: Cross multiply
    11,919.03x = 16,468.10 × 9,420.33
  4. Step 4: Simplify right side
    11,919.03x = 155,134,889.37
  5. Step 5: Solve for x
    x = 155,134,889.37/11,919.03
  6. Step 6: Final answer
    x = 13,015.73

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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.