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Finding the Fourth Proportional to 12,993.86, 19,490.75 and 4,673.86

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Solution

The fourth proportional to 12,993.86, 19,490.75 and 4,673.86 is: 7,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.86 : 19,490.75 = 4,673.86 : x
  2. Step 2: Convert to fraction form
    12,993.86/19,490.75 = 4,673.86/x
  3. Step 3: Cross multiply
    12,993.86x = 19,490.75 × 4,673.86
  4. Step 4: Simplify right side
    12,993.86x = 91,097,036.80
  5. Step 5: Solve for x
    x = 91,097,036.80/12,993.86
  6. Step 6: Final answer
    x = 7,010.78

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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.