Home / 21,278,975.06-29,365,018.39-12,111,617.81

Finding the Fourth Proportional to 21,278,975.06, 29,365,018.39 and 12,111,617.81

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Solution

The fourth proportional to 21,278,975.06, 29,365,018.39 and 12,111,617.81 is: 16,714,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,975.06 : 29,365,018.39 = 12,111,617.81 : x
  2. Step 2: Convert to fraction form
    21,278,975.06/29,365,018.39 = 12,111,617.81/x
  3. Step 3: Cross multiply
    21,278,975.06x = 29,365,018.39 × 12,111,617.81
  4. Step 4: Simplify right side
    21,278,975.06x = 355,657,879,811,853.56
  5. Step 5: Solve for x
    x = 355,657,879,811,853.56/21,278,975.06
  6. Step 6: Final answer
    x = 16,714,051.25

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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.