Home / 21,363.51-29,481.03-11,803.21

Finding the Fourth Proportional to 21,363.51, 29,481.03 and 11,803.21

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Solution

The fourth proportional to 21,363.51, 29,481.03 and 11,803.21 is: 16,288.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.51 : 29,481.03 = 11,803.21 : x
  2. Step 2: Convert to fraction form
    21,363.51/29,481.03 = 11,803.21/x
  3. Step 3: Cross multiply
    21,363.51x = 29,481.03 × 11,803.21
  4. Step 4: Simplify right side
    21,363.51x = 347,970,623.15
  5. Step 5: Solve for x
    x = 347,970,623.15/21,363.51
  6. Step 6: Final answer
    x = 16,288.08

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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.