Home / 13,801.60-20,700.06-3,938.62

Finding the Fourth Proportional to 13,801.60, 20,700.06 and 3,938.62

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Solution

The fourth proportional to 13,801.60, 20,700.06 and 3,938.62 is: 5,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.60 : 20,700.06 = 3,938.62 : x
  2. Step 2: Convert to fraction form
    13,801.60/20,700.06 = 3,938.62/x
  3. Step 3: Cross multiply
    13,801.60x = 20,700.06 × 3,938.62
  4. Step 4: Simplify right side
    13,801.60x = 81,529,670.32
  5. Step 5: Solve for x
    x = 81,529,670.32/13,801.60
  6. Step 6: Final answer
    x = 5,907.26

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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.