Home / 13,845.84-20,735.28-9,690

Finding the Fourth Proportional to 13,845.84, 20,735.28 and 9,690

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Solution

The fourth proportional to 13,845.84, 20,735.28 and 9,690 is: 14,511.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.84 : 20,735.28 = 9,690 : x
  2. Step 2: Convert to fraction form
    13,845.84/20,735.28 = 9,690/x
  3. Step 3: Cross multiply
    13,845.84x = 20,735.28 × 9,690
  4. Step 4: Simplify right side
    13,845.84x = 200,924,863.20
  5. Step 5: Solve for x
    x = 200,924,863.20/13,845.84
  6. Step 6: Final answer
    x = 14,511.57

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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.