Home / 20,684.89-31,015.56-14,119.03

Finding the Fourth Proportional to 20,684.89, 31,015.56 and 14,119.03

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Solution

The fourth proportional to 20,684.89, 31,015.56 and 14,119.03 is: 21,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.89 : 31,015.56 = 14,119.03 : x
  2. Step 2: Convert to fraction form
    20,684.89/31,015.56 = 14,119.03/x
  3. Step 3: Cross multiply
    20,684.89x = 31,015.56 × 14,119.03
  4. Step 4: Simplify right side
    20,684.89x = 437,909,622.11
  5. Step 5: Solve for x
    x = 437,909,622.11/20,684.89
  6. Step 6: Final answer
    x = 21,170.51

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1.5x scale

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.