Home / 12,476.80-18,579.31-12,338.73

Finding the Fourth Proportional to 12,476.80, 18,579.31 and 12,338.73

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Solution

The fourth proportional to 12,476.80, 18,579.31 and 12,338.73 is: 18,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.80 : 18,579.31 = 12,338.73 : x
  2. Step 2: Convert to fraction form
    12,476.80/18,579.31 = 12,338.73/x
  3. Step 3: Cross multiply
    12,476.80x = 18,579.31 × 12,338.73
  4. Step 4: Simplify right side
    12,476.80x = 229,245,058.83
  5. Step 5: Solve for x
    x = 229,245,058.83/12,476.80
  6. Step 6: Final answer
    x = 18,373.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.