Home / 21,243.07-29,316.77-11,811.43

Finding the Fourth Proportional to 21,243.07, 29,316.77 and 11,811.43

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Solution

The fourth proportional to 21,243.07, 29,316.77 and 11,811.43 is: 16,300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.07 : 29,316.77 = 11,811.43 : x
  2. Step 2: Convert to fraction form
    21,243.07/29,316.77 = 11,811.43/x
  3. Step 3: Cross multiply
    21,243.07x = 29,316.77 × 11,811.43
  4. Step 4: Simplify right side
    21,243.07x = 346,272,976.68
  5. Step 5: Solve for x
    x = 346,272,976.68/21,243.07
  6. Step 6: Final answer
    x = 16,300.51

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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.