Home / 15,837.30-21,864.18-10,809

Finding the Fourth Proportional to 15,837.30, 21,864.18 and 10,809

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Solution

The fourth proportional to 15,837.30, 21,864.18 and 10,809 is: 14,922.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837.30 : 21,864.18 = 10,809 : x
  2. Step 2: Convert to fraction form
    15,837.30/21,864.18 = 10,809/x
  3. Step 3: Cross multiply
    15,837.30x = 21,864.18 × 10,809
  4. Step 4: Simplify right side
    15,837.30x = 236,329,921.62
  5. Step 5: Solve for x
    x = 236,329,921.62/15,837.30
  6. Step 6: Final answer
    x = 14,922.36

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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.