Home / 13,266.90-19,893.50-3,905.70

Finding the Fourth Proportional to 13,266.90, 19,893.50 and 3,905.70

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Solution

The fourth proportional to 13,266.90, 19,893.50 and 3,905.70 is: 5,856.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.90 : 19,893.50 = 3,905.70 : x
  2. Step 2: Convert to fraction form
    13,266.90/19,893.50 = 3,905.70/x
  3. Step 3: Cross multiply
    13,266.90x = 19,893.50 × 3,905.70
  4. Step 4: Simplify right side
    13,266.90x = 77,698,042.95
  5. Step 5: Solve for x
    x = 77,698,042.95/13,266.90
  6. Step 6: Final answer
    x = 5,856.53

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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.