Home / 15,635.37-21,574.84-12,456.73

Finding the Fourth Proportional to 15,635.37, 21,574.84 and 12,456.73

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Solution

The fourth proportional to 15,635.37, 21,574.84 and 12,456.73 is: 17,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.37 : 21,574.84 = 12,456.73 : x
  2. Step 2: Convert to fraction form
    15,635.37/21,574.84 = 12,456.73/x
  3. Step 3: Cross multiply
    15,635.37x = 21,574.84 × 12,456.73
  4. Step 4: Simplify right side
    15,635.37x = 268,751,975.86
  5. Step 5: Solve for x
    x = 268,751,975.86/15,635.37
  6. Step 6: Final answer
    x = 17,188.71

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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.