Home / 21,024.82-31,556.91-10,643.86

Finding the Fourth Proportional to 21,024.82, 31,556.91 and 10,643.86

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Solution

The fourth proportional to 21,024.82, 31,556.91 and 10,643.86 is: 15,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.82 : 31,556.91 = 10,643.86 : x
  2. Step 2: Convert to fraction form
    21,024.82/31,556.91 = 10,643.86/x
  3. Step 3: Cross multiply
    21,024.82x = 31,556.91 × 10,643.86
  4. Step 4: Simplify right side
    21,024.82x = 335,887,332.07
  5. Step 5: Solve for x
    x = 335,887,332.07/21,024.82
  6. Step 6: Final answer
    x = 15,975.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.