Home / 12,398.82-18,574.79-9,611.85

Finding the Fourth Proportional to 12,398.82, 18,574.79 and 9,611.85

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Solution

The fourth proportional to 12,398.82, 18,574.79 and 9,611.85 is: 14,399.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.82 : 18,574.79 = 9,611.85 : x
  2. Step 2: Convert to fraction form
    12,398.82/18,574.79 = 9,611.85/x
  3. Step 3: Cross multiply
    12,398.82x = 18,574.79 × 9,611.85
  4. Step 4: Simplify right side
    12,398.82x = 178,538,012.37
  5. Step 5: Solve for x
    x = 178,538,012.37/12,398.82
  6. Step 6: Final answer
    x = 14,399.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.