Home / 20,704,704.80-31,057,057.20-7,240,128.80

Finding the Fourth Proportional to 20,704,704.80, 31,057,057.20 and 7,240,128.80

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Solution

The fourth proportional to 20,704,704.80, 31,057,057.20 and 7,240,128.80 is: 10,860,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,704.80 : 31,057,057.20 = 7,240,128.80 : x
  2. Step 2: Convert to fraction form
    20,704,704.80/31,057,057.20 = 7,240,128.80/x
  3. Step 3: Cross multiply
    20,704,704.80x = 31,057,057.20 × 7,240,128.80
  4. Step 4: Simplify right side
    20,704,704.80x = 224,857,094,276,967.34
  5. Step 5: Solve for x
    x = 224,857,094,276,967.34/20,704,704.80
  6. Step 6: Final answer
    x = 10,860,193.20

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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.