Home / 21,278,992.50-29,365,042.47-12,111,635.25

Finding the Fourth Proportional to 21,278,992.50, 29,365,042.47 and 12,111,635.25

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Solution

The fourth proportional to 21,278,992.50, 29,365,042.47 and 12,111,635.25 is: 16,714,075.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,992.50 : 29,365,042.47 = 12,111,635.25 : x
  2. Step 2: Convert to fraction form
    21,278,992.50/29,365,042.47 = 12,111,635.25/x
  3. Step 3: Cross multiply
    21,278,992.50x = 29,365,042.47 × 12,111,635.25
  4. Step 4: Simplify right side
    21,278,992.50x = 355,658,683,497,399.06
  5. Step 5: Solve for x
    x = 355,658,683,497,399.06/21,278,992.50
  6. Step 6: Final answer
    x = 16,714,075.33

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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.