Home / 15,297,409.36-21,109,623.60-8,420,548.24

Finding the Fourth Proportional to 15,297,409.36, 21,109,623.60 and 8,420,548.24

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Solution

The fourth proportional to 15,297,409.36, 21,109,623.60 and 8,420,548.24 is: 11,619,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297,409.36 : 21,109,623.60 = 8,420,548.24 : x
  2. Step 2: Convert to fraction form
    15,297,409.36/21,109,623.60 = 8,420,548.24/x
  3. Step 3: Cross multiply
    15,297,409.36x = 21,109,623.60 × 8,420,548.24
  4. Step 4: Simplify right side
    15,297,409.36x = 177,754,603,852,042.47
  5. Step 5: Solve for x
    x = 177,754,603,852,042.47/15,297,409.36
  6. Step 6: Final answer
    x = 11,619,915.48

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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.