Home / 13,958.44-20,929.46-5,638.72

Finding the Fourth Proportional to 13,958.44, 20,929.46 and 5,638.72

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Solution

The fourth proportional to 13,958.44, 20,929.46 and 5,638.72 is: 8,454.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.44 : 20,929.46 = 5,638.72 : x
  2. Step 2: Convert to fraction form
    13,958.44/20,929.46 = 5,638.72/x
  3. Step 3: Cross multiply
    13,958.44x = 20,929.46 × 5,638.72
  4. Step 4: Simplify right side
    13,958.44x = 118,015,364.69
  5. Step 5: Solve for x
    x = 118,015,364.69/13,958.44
  6. Step 6: Final answer
    x = 8,454.77

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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.