Home / 12,743.73-19,115.49-8,980.05

Finding the Fourth Proportional to 12,743.73, 19,115.49 and 8,980.05

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Solution

The fourth proportional to 12,743.73, 19,115.49 and 8,980.05 is: 13,470.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.73 : 19,115.49 = 8,980.05 : x
  2. Step 2: Convert to fraction form
    12,743.73/19,115.49 = 8,980.05/x
  3. Step 3: Cross multiply
    12,743.73x = 19,115.49 × 8,980.05
  4. Step 4: Simplify right side
    12,743.73x = 171,658,055.97
  5. Step 5: Solve for x
    x = 171,658,055.97/12,743.73
  6. Step 6: Final answer
    x = 13,470.00

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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.