Home / 19,905.04-29,835.60-8,211.84

Finding the Fourth Proportional to 19,905.04, 29,835.60 and 8,211.84

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Solution

The fourth proportional to 19,905.04, 29,835.60 and 8,211.84 is: 12,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.04 : 29,835.60 = 8,211.84 : x
  2. Step 2: Convert to fraction form
    19,905.04/29,835.60 = 8,211.84/x
  3. Step 3: Cross multiply
    19,905.04x = 29,835.60 × 8,211.84
  4. Step 4: Simplify right side
    19,905.04x = 245,005,173.50
  5. Step 5: Solve for x
    x = 245,005,173.50/19,905.04
  6. Step 6: Final answer
    x = 12,308.70

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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.