Home / 13,690.15-20,532.07-3,830.11

Finding the Fourth Proportional to 13,690.15, 20,532.07 and 3,830.11

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Solution

The fourth proportional to 13,690.15, 20,532.07 and 3,830.11 is: 5,744.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.15 : 20,532.07 = 3,830.11 : x
  2. Step 2: Convert to fraction form
    13,690.15/20,532.07 = 3,830.11/x
  3. Step 3: Cross multiply
    13,690.15x = 20,532.07 × 3,830.11
  4. Step 4: Simplify right side
    13,690.15x = 78,640,086.63
  5. Step 5: Solve for x
    x = 78,640,086.63/13,690.15
  6. Step 6: Final answer
    x = 5,744.28

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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.