Home / 13,074.50-19,611.75-3,840.50

Finding the Fourth Proportional to 13,074.50, 19,611.75 and 3,840.50

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Solution

The fourth proportional to 13,074.50, 19,611.75 and 3,840.50 is: 5,760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.50 : 19,611.75 = 3,840.50 : x
  2. Step 2: Convert to fraction form
    13,074.50/19,611.75 = 3,840.50/x
  3. Step 3: Cross multiply
    13,074.50x = 19,611.75 × 3,840.50
  4. Step 4: Simplify right side
    13,074.50x = 75,318,925.88
  5. Step 5: Solve for x
    x = 75,318,925.88/13,074.50
  6. Step 6: Final answer
    x = 5,760.75

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Double scale
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Similar ratio
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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.