Home / 13,771,239.60-20,631,976.20-12,178,714.80

Finding the Fourth Proportional to 13,771,239.60, 20,631,976.20 and 12,178,714.80

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Solution

The fourth proportional to 13,771,239.60, 20,631,976.20 and 12,178,714.80 is: 18,246,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771,239.60 : 20,631,976.20 = 12,178,714.80 : x
  2. Step 2: Convert to fraction form
    13,771,239.60/20,631,976.20 = 12,178,714.80/x
  3. Step 3: Cross multiply
    13,771,239.60x = 20,631,976.20 × 12,178,714.80
  4. Step 4: Simplify right side
    13,771,239.60x = 251,270,953,900,187.78
  5. Step 5: Solve for x
    x = 251,270,953,900,187.78/13,771,239.60
  6. Step 6: Final answer
    x = 18,246,066.53

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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.