Home / 13,688.22-20,529.19-3,828.20

Finding the Fourth Proportional to 13,688.22, 20,529.19 and 3,828.20

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Solution

The fourth proportional to 13,688.22, 20,529.19 and 3,828.20 is: 5,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.22 : 20,529.19 = 3,828.20 : x
  2. Step 2: Convert to fraction form
    13,688.22/20,529.19 = 3,828.20/x
  3. Step 3: Cross multiply
    13,688.22x = 20,529.19 × 3,828.20
  4. Step 4: Simplify right side
    13,688.22x = 78,589,762.52
  5. Step 5: Solve for x
    x = 78,589,762.52/13,688.22
  6. Step 6: Final answer
    x = 5,741.42

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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.