Home / 21,261,431.94-29,331,572.09-13,001,855.30

Finding the Fourth Proportional to 21,261,431.94, 29,331,572.09 and 13,001,855.30

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Solution

The fourth proportional to 21,261,431.94, 29,331,572.09 and 13,001,855.30 is: 17,936,931.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261,431.94 : 29,331,572.09 = 13,001,855.30 : x
  2. Step 2: Convert to fraction form
    21,261,431.94/29,331,572.09 = 13,001,855.30/x
  3. Step 3: Cross multiply
    21,261,431.94x = 29,331,572.09 × 13,001,855.30
  4. Step 4: Simplify right side
    21,261,431.94x = 381,364,856,035,698.62
  5. Step 5: Solve for x
    x = 381,364,856,035,698.62/21,261,431.94
  6. Step 6: Final answer
    x = 17,936,931.86

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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.