Home / 21,753.88-30,021.54-12,324.28

Finding the Fourth Proportional to 21,753.88, 30,021.54 and 12,324.28

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Solution

The fourth proportional to 21,753.88, 30,021.54 and 12,324.28 is: 17,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.88 : 30,021.54 = 12,324.28 : x
  2. Step 2: Convert to fraction form
    21,753.88/30,021.54 = 12,324.28/x
  3. Step 3: Cross multiply
    21,753.88x = 30,021.54 × 12,324.28
  4. Step 4: Simplify right side
    21,753.88x = 369,993,864.99
  5. Step 5: Solve for x
    x = 369,993,864.99/21,753.88
  6. Step 6: Final answer
    x = 17,008.18

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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.