Home / 13,740.46-20,611.85-4,381.81

Finding the Fourth Proportional to 13,740.46, 20,611.85 and 4,381.81

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Solution

The fourth proportional to 13,740.46, 20,611.85 and 4,381.81 is: 6,573.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.46 : 20,611.85 = 4,381.81 : x
  2. Step 2: Convert to fraction form
    13,740.46/20,611.85 = 4,381.81/x
  3. Step 3: Cross multiply
    13,740.46x = 20,611.85 × 4,381.81
  4. Step 4: Simplify right side
    13,740.46x = 90,317,137.01
  5. Step 5: Solve for x
    x = 90,317,137.01/13,740.46
  6. Step 6: Final answer
    x = 6,573.08

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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.