Home / 13,236.09-19,840.29-9,720.87

Finding the Fourth Proportional to 13,236.09, 19,840.29 and 9,720.87

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Solution

The fourth proportional to 13,236.09, 19,840.29 and 9,720.87 is: 14,571.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.09 : 19,840.29 = 9,720.87 : x
  2. Step 2: Convert to fraction form
    13,236.09/19,840.29 = 9,720.87/x
  3. Step 3: Cross multiply
    13,236.09x = 19,840.29 × 9,720.87
  4. Step 4: Simplify right side
    13,236.09x = 192,864,879.85
  5. Step 5: Solve for x
    x = 192,864,879.85/13,236.09
  6. Step 6: Final answer
    x = 14,571.14

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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.