Home / 18,520.46-25,558.85-10,136.96

Finding the Fourth Proportional to 18,520.46, 25,558.85 and 10,136.96

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Solution

The fourth proportional to 18,520.46, 25,558.85 and 10,136.96 is: 13,989.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.46 : 25,558.85 = 10,136.96 : x
  2. Step 2: Convert to fraction form
    18,520.46/25,558.85 = 10,136.96/x
  3. Step 3: Cross multiply
    18,520.46x = 25,558.85 × 10,136.96
  4. Step 4: Simplify right side
    18,520.46x = 259,089,040.10
  5. Step 5: Solve for x
    x = 259,089,040.10/18,520.46
  6. Step 6: Final answer
    x = 13,989.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.