Home / 15,790.58-21,790.97-8,717.00

Finding the Fourth Proportional to 15,790.58, 21,790.97 and 8,717.00

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Solution

The fourth proportional to 15,790.58, 21,790.97 and 8,717.00 is: 12,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.58 : 21,790.97 = 8,717.00 : x
  2. Step 2: Convert to fraction form
    15,790.58/21,790.97 = 8,717.00/x
  3. Step 3: Cross multiply
    15,790.58x = 21,790.97 × 8,717.00
  4. Step 4: Simplify right side
    15,790.58x = 189,951,732.95
  5. Step 5: Solve for x
    x = 189,951,732.95/15,790.58
  6. Step 6: Final answer
    x = 12,029.44

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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.