Home / 21,987,768.20-30,330,513.48-13,713,465.31

Finding the Fourth Proportional to 21,987,768.20, 30,330,513.48 and 13,713,465.31

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Solution

The fourth proportional to 21,987,768.20, 30,330,513.48 and 13,713,465.31 is: 18,916,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,768.20 : 30,330,513.48 = 13,713,465.31 : x
  2. Step 2: Convert to fraction form
    21,987,768.20/30,330,513.48 = 13,713,465.31/x
  3. Step 3: Cross multiply
    21,987,768.20x = 30,330,513.48 × 13,713,465.31
  4. Step 4: Simplify right side
    21,987,768.20x = 415,936,444,418,066.56
  5. Step 5: Solve for x
    x = 415,936,444,418,066.56/21,987,768.20
  6. Step 6: Final answer
    x = 18,916,719.55

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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.