Home / 21,987,743.25-30,330,479.08-13,713,440.36

Finding the Fourth Proportional to 21,987,743.25, 30,330,479.08 and 13,713,440.36

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Solution

The fourth proportional to 21,987,743.25, 30,330,479.08 and 13,713,440.36 is: 18,916,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,743.25 : 30,330,479.08 = 13,713,440.36 : x
  2. Step 2: Convert to fraction form
    21,987,743.25/30,330,479.08 = 13,713,440.36/x
  3. Step 3: Cross multiply
    21,987,743.25x = 30,330,479.08 × 13,713,440.36
  4. Step 4: Simplify right side
    21,987,743.25x = 415,935,215,819,297.12
  5. Step 5: Solve for x
    x = 415,935,215,819,297.12/21,987,743.25
  6. Step 6: Final answer
    x = 18,916,685.13

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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.