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Finding the Fourth Proportional to 12,879.48, 17,773.74 and 7,291.56

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Solution

The fourth proportional to 12,879.48, 17,773.74 and 7,291.56 is: 10,062.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.48 : 17,773.74 = 7,291.56 : x
  2. Step 2: Convert to fraction form
    12,879.48/17,773.74 = 7,291.56/x
  3. Step 3: Cross multiply
    12,879.48x = 17,773.74 × 7,291.56
  4. Step 4: Simplify right side
    12,879.48x = 129,598,291.63
  5. Step 5: Solve for x
    x = 129,598,291.63/12,879.48
  6. Step 6: Final answer
    x = 10,062.39

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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.