Home / 21,753.77-30,020.21-12,322.33

Finding the Fourth Proportional to 21,753.77, 30,020.21 and 12,322.33

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Solution

The fourth proportional to 21,753.77, 30,020.21 and 12,322.33 is: 17,004.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.77 : 30,020.21 = 12,322.33 : x
  2. Step 2: Convert to fraction form
    21,753.77/30,020.21 = 12,322.33/x
  3. Step 3: Cross multiply
    21,753.77x = 30,020.21 × 12,322.33
  4. Step 4: Simplify right side
    21,753.77x = 369,918,722.58
  5. Step 5: Solve for x
    x = 369,918,722.58/21,753.77
  6. Step 6: Final answer
    x = 17,004.81

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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.