Home / 21,278,965.25-29,365,004.85-12,111,608

Finding the Fourth Proportional to 21,278,965.25, 29,365,004.85 and 12,111,608

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Solution

The fourth proportional to 21,278,965.25, 29,365,004.85 and 12,111,608 is: 16,714,037.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,965.25 : 29,365,004.85 = 12,111,608 : x
  2. Step 2: Convert to fraction form
    21,278,965.25/29,365,004.85 = 12,111,608/x
  3. Step 3: Cross multiply
    21,278,965.25x = 29,365,004.85 × 12,111,608
  4. Step 4: Simplify right side
    21,278,965.25x = 355,657,427,661,298.81
  5. Step 5: Solve for x
    x = 355,657,427,661,298.81/21,278,965.25
  6. Step 6: Final answer
    x = 16,714,037.71

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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.