Home / 21,837.84-30,105.68-18,467.11

Finding the Fourth Proportional to 21,837.84, 30,105.68 and 18,467.11

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Solution

The fourth proportional to 21,837.84, 30,105.68 and 18,467.11 is: 25,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.84 : 30,105.68 = 18,467.11 : x
  2. Step 2: Convert to fraction form
    21,837.84/30,105.68 = 18,467.11/x
  3. Step 3: Cross multiply
    21,837.84x = 30,105.68 × 18,467.11
  4. Step 4: Simplify right side
    21,837.84x = 555,964,904.18
  5. Step 5: Solve for x
    x = 555,964,904.18/21,837.84
  6. Step 6: Final answer
    x = 25,458.79

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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.