Home / 13,039.67-17,981.49-11,157.48

Finding the Fourth Proportional to 13,039.67, 17,981.49 and 11,157.48

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Solution

The fourth proportional to 13,039.67, 17,981.49 and 11,157.48 is: 15,385.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.67 : 17,981.49 = 11,157.48 : x
  2. Step 2: Convert to fraction form
    13,039.67/17,981.49 = 11,157.48/x
  3. Step 3: Cross multiply
    13,039.67x = 17,981.49 × 11,157.48
  4. Step 4: Simplify right side
    13,039.67x = 200,628,115.05
  5. Step 5: Solve for x
    x = 200,628,115.05/13,039.67
  6. Step 6: Final answer
    x = 15,385.99

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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.