Home / 22,131.36-30,536.64-13,176

Finding the Fourth Proportional to 22,131.36, 30,536.64 and 13,176

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Solution

The fourth proportional to 22,131.36, 30,536.64 and 13,176 is: 18,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,131.36 : 30,536.64 = 13,176 : x
  2. Step 2: Convert to fraction form
    22,131.36/30,536.64 = 13,176/x
  3. Step 3: Cross multiply
    22,131.36x = 30,536.64 × 13,176
  4. Step 4: Simplify right side
    22,131.36x = 402,350,768.64
  5. Step 5: Solve for x
    x = 402,350,768.64/22,131.36
  6. Step 6: Final answer
    x = 18,180.12

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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.