Home / 21,680,078.47-29,915,750.43-12,388,249.49

Finding the Fourth Proportional to 21,680,078.47, 29,915,750.43 and 12,388,249.49

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Solution

The fourth proportional to 21,680,078.47, 29,915,750.43 and 12,388,249.49 is: 17,094,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680,078.47 : 29,915,750.43 = 12,388,249.49 : x
  2. Step 2: Convert to fraction form
    21,680,078.47/29,915,750.43 = 12,388,249.49/x
  3. Step 3: Cross multiply
    21,680,078.47x = 29,915,750.43 × 12,388,249.49
  4. Step 4: Simplify right side
    21,680,078.47x = 370,603,779,857,836
  5. Step 5: Solve for x
    x = 370,603,779,857,836/21,680,078.47
  6. Step 6: Final answer
    x = 17,094,208.42

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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.