Home / 21,754.23-30,020.85-12,322.79

Finding the Fourth Proportional to 21,754.23, 30,020.85 and 12,322.79

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Solution

The fourth proportional to 21,754.23, 30,020.85 and 12,322.79 is: 17,005.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.23 : 30,020.85 = 12,322.79 : x
  2. Step 2: Convert to fraction form
    21,754.23/30,020.85 = 12,322.79/x
  3. Step 3: Cross multiply
    21,754.23x = 30,020.85 × 12,322.79
  4. Step 4: Simplify right side
    21,754.23x = 369,940,630.17
  5. Step 5: Solve for x
    x = 369,940,630.17/21,754.23
  6. Step 6: Final answer
    x = 17,005.46

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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.