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Finding the Fourth Proportional to 10,178,893.80, 15,268,340.70 and 8,584,570.80

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Solution

The fourth proportional to 10,178,893.80, 15,268,340.70 and 8,584,570.80 is: 12,876,856.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,178,893.80 : 15,268,340.70 = 8,584,570.80 : x
  2. Step 2: Convert to fraction form
    10,178,893.80/15,268,340.70 = 8,584,570.80/x
  3. Step 3: Cross multiply
    10,178,893.80x = 15,268,340.70 × 8,584,570.80
  4. Step 4: Simplify right side
    10,178,893.80x = 131,072,151,737,671.56
  5. Step 5: Solve for x
    x = 131,072,151,737,671.56/10,178,893.80
  6. Step 6: Final answer
    x = 12,876,856.20

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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.