Home / 15,694.47-21,658.26-8,620.83

Finding the Fourth Proportional to 15,694.47, 21,658.26 and 8,620.83

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Solution

The fourth proportional to 15,694.47, 21,658.26 and 8,620.83 is: 11,896.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.47 : 21,658.26 = 8,620.83 : x
  2. Step 2: Convert to fraction form
    15,694.47/21,658.26 = 8,620.83/x
  3. Step 3: Cross multiply
    15,694.47x = 21,658.26 × 8,620.83
  4. Step 4: Simplify right side
    15,694.47x = 186,712,177.56
  5. Step 5: Solve for x
    x = 186,712,177.56/15,694.47
  6. Step 6: Final answer
    x = 11,896.69

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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.