Home / 21,751.07-30,018.59-12,192.58

Finding the Fourth Proportional to 21,751.07, 30,018.59 and 12,192.58

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Solution

The fourth proportional to 21,751.07, 30,018.59 and 12,192.58 is: 16,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.07 : 30,018.59 = 12,192.58 : x
  2. Step 2: Convert to fraction form
    21,751.07/30,018.59 = 12,192.58/x
  3. Step 3: Cross multiply
    21,751.07x = 30,018.59 × 12,192.58
  4. Step 4: Simplify right side
    21,751.07x = 366,004,060.06
  5. Step 5: Solve for x
    x = 366,004,060.06/21,751.07
  6. Step 6: Final answer
    x = 16,826.95

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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.