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Finding the Fourth Proportional to 13,782,955.60, 20,642,940.60 and 8,114,251.60

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Solution

The fourth proportional to 13,782,955.60, 20,642,940.60 and 8,114,251.60 is: 12,152,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782,955.60 : 20,642,940.60 = 8,114,251.60 : x
  2. Step 2: Convert to fraction form
    13,782,955.60/20,642,940.60 = 8,114,251.60/x
  3. Step 3: Cross multiply
    13,782,955.60x = 20,642,940.60 × 8,114,251.60
  4. Step 4: Simplify right side
    13,782,955.60x = 167,502,013,792,254.97
  5. Step 5: Solve for x
    x = 167,502,013,792,254.97/13,782,955.60
  6. Step 6: Final answer
    x = 12,152,837.07

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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.