Home / 20,844.74-31,270.36-6,990.50

Finding the Fourth Proportional to 20,844.74, 31,270.36 and 6,990.50

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Solution

The fourth proportional to 20,844.74, 31,270.36 and 6,990.50 is: 10,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.74 : 31,270.36 = 6,990.50 : x
  2. Step 2: Convert to fraction form
    20,844.74/31,270.36 = 6,990.50/x
  3. Step 3: Cross multiply
    20,844.74x = 31,270.36 × 6,990.50
  4. Step 4: Simplify right side
    20,844.74x = 218,595,451.58
  5. Step 5: Solve for x
    x = 218,595,451.58/20,844.74
  6. Step 6: Final answer
    x = 10,486.84

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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.