Home / 13,311.78-19,961.84-4,985.96

Finding the Fourth Proportional to 13,311.78, 19,961.84 and 4,985.96

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Solution

The fourth proportional to 13,311.78, 19,961.84 and 4,985.96 is: 7,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.78 : 19,961.84 = 4,985.96 : x
  2. Step 2: Convert to fraction form
    13,311.78/19,961.84 = 4,985.96/x
  3. Step 3: Cross multiply
    13,311.78x = 19,961.84 × 4,985.96
  4. Step 4: Simplify right side
    13,311.78x = 99,528,835.96
  5. Step 5: Solve for x
    x = 99,528,835.96/13,311.78
  6. Step 6: Final answer
    x = 7,476.75

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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.