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Finding the Fourth Proportional to 8,487,422.84, 12,731,009.42 and 2,097,675.80

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Solution

The fourth proportional to 8,487,422.84, 12,731,009.42 and 2,097,675.80 is: 3,146,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487,422.84 : 12,731,009.42 = 2,097,675.80 : x
  2. Step 2: Convert to fraction form
    8,487,422.84/12,731,009.42 = 2,097,675.80/x
  3. Step 3: Cross multiply
    8,487,422.84x = 12,731,009.42 × 2,097,675.80
  4. Step 4: Simplify right side
    8,487,422.84x = 26,705,530,369,906.04
  5. Step 5: Solve for x
    x = 26,705,530,369,906.04/8,487,422.84
  6. Step 6: Final answer
    x = 3,146,482.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.