Home / 13,755,112.80-20,632,669.20-12,579,381.60

Finding the Fourth Proportional to 13,755,112.80, 20,632,669.20 and 12,579,381.60

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Solution

The fourth proportional to 13,755,112.80, 20,632,669.20 and 12,579,381.60 is: 18,869,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755,112.80 : 20,632,669.20 = 12,579,381.60 : x
  2. Step 2: Convert to fraction form
    13,755,112.80/20,632,669.20 = 12,579,381.60/x
  3. Step 3: Cross multiply
    13,755,112.80x = 20,632,669.20 × 12,579,381.60
  4. Step 4: Simplify right side
    13,755,112.80x = 259,546,219,293,366.69
  5. Step 5: Solve for x
    x = 259,546,219,293,366.69/13,755,112.80
  6. Step 6: Final answer
    x = 18,869,072.40

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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.