Home / 12,879,773.79-17,774,514.09-7,078,761.15

Finding the Fourth Proportional to 12,879,773.79, 17,774,514.09 and 7,078,761.15

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Solution

The fourth proportional to 12,879,773.79, 17,774,514.09 and 7,078,761.15 is: 9,768,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,773.79 : 17,774,514.09 = 7,078,761.15 : x
  2. Step 2: Convert to fraction form
    12,879,773.79/17,774,514.09 = 7,078,761.15/x
  3. Step 3: Cross multiply
    12,879,773.79x = 17,774,514.09 × 7,078,761.15
  4. Step 4: Simplify right side
    12,879,773.79x = 125,821,539,800,419.61
  5. Step 5: Solve for x
    x = 125,821,539,800,419.61/12,879,773.79
  6. Step 6: Final answer
    x = 9,768,924.66

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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.