Home / 11,161.28-16,730.63-7,004.21

Finding the Fourth Proportional to 11,161.28, 16,730.63 and 7,004.21

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Solution

The fourth proportional to 11,161.28, 16,730.63 and 7,004.21 is: 10,499.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.28 : 16,730.63 = 7,004.21 : x
  2. Step 2: Convert to fraction form
    11,161.28/16,730.63 = 7,004.21/x
  3. Step 3: Cross multiply
    11,161.28x = 16,730.63 × 7,004.21
  4. Step 4: Simplify right side
    11,161.28x = 117,184,845.95
  5. Step 5: Solve for x
    x = 117,184,845.95/11,161.28
  6. Step 6: Final answer
    x = 10,499.23

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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.