Home / 20,848.74-31,274.87-6,808.55

Finding the Fourth Proportional to 20,848.74, 31,274.87 and 6,808.55

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Solution

The fourth proportional to 20,848.74, 31,274.87 and 6,808.55 is: 10,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.74 : 31,274.87 = 6,808.55 : x
  2. Step 2: Convert to fraction form
    20,848.74/31,274.87 = 6,808.55/x
  3. Step 3: Cross multiply
    20,848.74x = 31,274.87 × 6,808.55
  4. Step 4: Simplify right side
    20,848.74x = 212,936,325.72
  5. Step 5: Solve for x
    x = 212,936,325.72/20,848.74
  6. Step 6: Final answer
    x = 10,213.39

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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.