Home / 20,739,940.70-31,109,911.06-19,900,132.70

Finding the Fourth Proportional to 20,739,940.70, 31,109,911.06 and 19,900,132.70

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Solution

The fourth proportional to 20,739,940.70, 31,109,911.06 and 19,900,132.70 is: 29,850,199.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,940.70 : 31,109,911.06 = 19,900,132.70 : x
  2. Step 2: Convert to fraction form
    20,739,940.70/31,109,911.06 = 19,900,132.70/x
  3. Step 3: Cross multiply
    20,739,940.70x = 31,109,911.06 × 19,900,132.70
  4. Step 4: Simplify right side
    20,739,940.70x = 619,091,358,379,197.62
  5. Step 5: Solve for x
    x = 619,091,358,379,197.62/20,739,940.70
  6. Step 6: Final answer
    x = 29,850,199.06

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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.