Home / 12,729,356.82-17,565,993.13-7,222,613.15

Finding the Fourth Proportional to 12,729,356.82, 17,565,993.13 and 7,222,613.15

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Solution

The fourth proportional to 12,729,356.82, 17,565,993.13 and 7,222,613.15 is: 9,966,911.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729,356.82 : 17,565,993.13 = 7,222,613.15 : x
  2. Step 2: Convert to fraction form
    12,729,356.82/17,565,993.13 = 7,222,613.15/x
  3. Step 3: Cross multiply
    12,729,356.82x = 17,565,993.13 × 7,222,613.15
  4. Step 4: Simplify right side
    12,729,356.82x = 126,872,372,973,547.66
  5. Step 5: Solve for x
    x = 126,872,372,973,547.66/12,729,356.82
  6. Step 6: Final answer
    x = 9,966,911.51

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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.