Home / 13,209,781.60-19,814,672.40-12,253,187.80

Finding the Fourth Proportional to 13,209,781.60, 19,814,672.40 and 12,253,187.80

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Solution

The fourth proportional to 13,209,781.60, 19,814,672.40 and 12,253,187.80 is: 18,379,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,781.60 : 19,814,672.40 = 12,253,187.80 : x
  2. Step 2: Convert to fraction form
    13,209,781.60/19,814,672.40 = 12,253,187.80/x
  3. Step 3: Cross multiply
    13,209,781.60x = 19,814,672.40 × 12,253,187.80
  4. Step 4: Simplify right side
    13,209,781.60x = 242,792,902,112,676.72
  5. Step 5: Solve for x
    x = 242,792,902,112,676.72/13,209,781.60
  6. Step 6: Final answer
    x = 18,379,781.70

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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.