Home / 13,081.66-18,039.42-11,199.47

Finding the Fourth Proportional to 13,081.66, 18,039.42 and 11,199.47

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Solution

The fourth proportional to 13,081.66, 18,039.42 and 11,199.47 is: 15,443.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.66 : 18,039.42 = 11,199.47 : x
  2. Step 2: Convert to fraction form
    13,081.66/18,039.42 = 11,199.47/x
  3. Step 3: Cross multiply
    13,081.66x = 18,039.42 × 11,199.47
  4. Step 4: Simplify right side
    13,081.66x = 202,031,943.11
  5. Step 5: Solve for x
    x = 202,031,943.11/13,081.66
  6. Step 6: Final answer
    x = 15,443.91

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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.