Home / 21,905,036.40-30,229,864.56-12,612,375

Finding the Fourth Proportional to 21,905,036.40, 30,229,864.56 and 12,612,375

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Solution

The fourth proportional to 21,905,036.40, 30,229,864.56 and 12,612,375 is: 17,405,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905,036.40 : 30,229,864.56 = 12,612,375 : x
  2. Step 2: Convert to fraction form
    21,905,036.40/30,229,864.56 = 12,612,375/x
  3. Step 3: Cross multiply
    21,905,036.40x = 30,229,864.56 × 12,612,375
  4. Step 4: Simplify right side
    21,905,036.40x = 381,270,388,029,930
  5. Step 5: Solve for x
    x = 381,270,388,029,930/21,905,036.40
  6. Step 6: Final answer
    x = 17,405,603.95

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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.