Home / 20,737.04-31,096.70-7,905.80

Finding the Fourth Proportional to 20,737.04, 31,096.70 and 7,905.80

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Solution

The fourth proportional to 20,737.04, 31,096.70 and 7,905.80 is: 11,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.04 : 31,096.70 = 7,905.80 : x
  2. Step 2: Convert to fraction form
    20,737.04/31,096.70 = 7,905.80/x
  3. Step 3: Cross multiply
    20,737.04x = 31,096.70 × 7,905.80
  4. Step 4: Simplify right side
    20,737.04x = 245,844,290.86
  5. Step 5: Solve for x
    x = 245,844,290.86/20,737.04
  6. Step 6: Final answer
    x = 11,855.32

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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.