Home / 13,230.63-18,247.50-8,191.29

Finding the Fourth Proportional to 13,230.63, 18,247.50 and 8,191.29

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Solution

The fourth proportional to 13,230.63, 18,247.50 and 8,191.29 is: 11,297.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.63 : 18,247.50 = 8,191.29 : x
  2. Step 2: Convert to fraction form
    13,230.63/18,247.50 = 8,191.29/x
  3. Step 3: Cross multiply
    13,230.63x = 18,247.50 × 8,191.29
  4. Step 4: Simplify right side
    13,230.63x = 149,470,564.28
  5. Step 5: Solve for x
    x = 149,470,564.28/13,230.63
  6. Step 6: Final answer
    x = 11,297.31

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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.