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Finding the Fourth Proportional to 12,879.24, 17,773.64 and 7,290.24

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Solution

The fourth proportional to 12,879.24, 17,773.64 and 7,290.24 is: 10,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.24 : 17,773.64 = 7,290.24 : x
  2. Step 2: Convert to fraction form
    12,879.24/17,773.64 = 7,290.24/x
  3. Step 3: Cross multiply
    12,879.24x = 17,773.64 × 7,290.24
  4. Step 4: Simplify right side
    12,879.24x = 129,574,101.27
  5. Step 5: Solve for x
    x = 129,574,101.27/12,879.24
  6. Step 6: Final answer
    x = 10,060.69

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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.