Home / 21,515.62-29,610.66-18,202

Finding the Fourth Proportional to 21,515.62, 29,610.66 and 18,202

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Solution

The fourth proportional to 21,515.62, 29,610.66 and 18,202 is: 25,050.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.62 : 29,610.66 = 18,202 : x
  2. Step 2: Convert to fraction form
    21,515.62/29,610.66 = 18,202/x
  3. Step 3: Cross multiply
    21,515.62x = 29,610.66 × 18,202
  4. Step 4: Simplify right side
    21,515.62x = 538,973,233.32
  5. Step 5: Solve for x
    x = 538,973,233.32/21,515.62
  6. Step 6: Final answer
    x = 25,050.32

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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.