Home / 21,016,321.42-29,001,865.53-12,320,285.74

Finding the Fourth Proportional to 21,016,321.42, 29,001,865.53 and 12,320,285.74

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Solution

The fourth proportional to 21,016,321.42, 29,001,865.53 and 12,320,285.74 is: 17,001,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016,321.42 : 29,001,865.53 = 12,320,285.74 : x
  2. Step 2: Convert to fraction form
    21,016,321.42/29,001,865.53 = 12,320,285.74/x
  3. Step 3: Cross multiply
    21,016,321.42x = 29,001,865.53 × 12,320,285.74
  4. Step 4: Simplify right side
    21,016,321.42x = 357,311,270,322,656.56
  5. Step 5: Solve for x
    x = 357,311,270,322,656.56/21,016,321.42
  6. Step 6: Final answer
    x = 17,001,608.57

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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.