Home / 13,135.70-19,705.98-4,253.38

Finding the Fourth Proportional to 13,135.70, 19,705.98 and 4,253.38

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Solution

The fourth proportional to 13,135.70, 19,705.98 and 4,253.38 is: 6,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.70 : 19,705.98 = 4,253.38 : x
  2. Step 2: Convert to fraction form
    13,135.70/19,705.98 = 4,253.38/x
  3. Step 3: Cross multiply
    13,135.70x = 19,705.98 × 4,253.38
  4. Step 4: Simplify right side
    13,135.70x = 83,817,021.21
  5. Step 5: Solve for x
    x = 83,817,021.21/13,135.70
  6. Step 6: Final answer
    x = 6,380.86

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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.