Home / 21,278,991.68-29,365,041.27-12,111,634.42

Finding the Fourth Proportional to 21,278,991.68, 29,365,041.27 and 12,111,634.42

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Solution

The fourth proportional to 21,278,991.68, 29,365,041.27 and 12,111,634.42 is: 16,714,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,991.68 : 29,365,041.27 = 12,111,634.42 : x
  2. Step 2: Convert to fraction form
    21,278,991.68/29,365,041.27 = 12,111,634.42/x
  3. Step 3: Cross multiply
    21,278,991.68x = 29,365,041.27 × 12,111,634.42
  4. Step 4: Simplify right side
    21,278,991.68x = 355,658,644,590,452.50
  5. Step 5: Solve for x
    x = 355,658,644,590,452.50/21,278,991.68
  6. Step 6: Final answer
    x = 16,714,074.14

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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.