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Finding the Fourth Proportional to 12,590.51, 18,879.48 and 7,327.26

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Solution

The fourth proportional to 12,590.51, 18,879.48 and 7,327.26 is: 10,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.51 : 18,879.48 = 7,327.26 : x
  2. Step 2: Convert to fraction form
    12,590.51/18,879.48 = 7,327.26/x
  3. Step 3: Cross multiply
    12,590.51x = 18,879.48 × 7,327.26
  4. Step 4: Simplify right side
    12,590.51x = 138,334,858.62
  5. Step 5: Solve for x
    x = 138,334,858.62/12,590.51
  6. Step 6: Final answer
    x = 10,987.24

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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.