Home / 21,754.16-30,019.68-12,192.88

Finding the Fourth Proportional to 21,754.16, 30,019.68 and 12,192.88

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Solution

The fourth proportional to 21,754.16, 30,019.68 and 12,192.88 is: 16,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.16 : 30,019.68 = 12,192.88 : x
  2. Step 2: Convert to fraction form
    21,754.16/30,019.68 = 12,192.88/x
  3. Step 3: Cross multiply
    21,754.16x = 30,019.68 × 12,192.88
  4. Step 4: Simplify right side
    21,754.16x = 366,026,355.88
  5. Step 5: Solve for x
    x = 366,026,355.88/21,754.16
  6. Step 6: Final answer
    x = 16,825.58

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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.