Home / 13,841.81-20,762.60-3,981.05

Finding the Fourth Proportional to 13,841.81, 20,762.60 and 3,981.05

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Solution

The fourth proportional to 13,841.81, 20,762.60 and 3,981.05 is: 5,971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,841.81 : 20,762.60 = 3,981.05 : x
  2. Step 2: Convert to fraction form
    13,841.81/20,762.60 = 3,981.05/x
  3. Step 3: Cross multiply
    13,841.81x = 20,762.60 × 3,981.05
  4. Step 4: Simplify right side
    13,841.81x = 82,656,825.01
  5. Step 5: Solve for x
    x = 82,656,825.01/13,841.81
  6. Step 6: Final answer
    x = 5,971.54

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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.