Home / 13,571.85-20,327.69-10,428.72

Finding the Fourth Proportional to 13,571.85, 20,327.69 and 10,428.72

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Solution

The fourth proportional to 13,571.85, 20,327.69 and 10,428.72 is: 15,619.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.85 : 20,327.69 = 10,428.72 : x
  2. Step 2: Convert to fraction form
    13,571.85/20,327.69 = 10,428.72/x
  3. Step 3: Cross multiply
    13,571.85x = 20,327.69 × 10,428.72
  4. Step 4: Simplify right side
    13,571.85x = 211,991,787.26
  5. Step 5: Solve for x
    x = 211,991,787.26/13,571.85
  6. Step 6: Final answer
    x = 15,619.96

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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.