Home / 13,740.30-20,611.96-4,378.14

Finding the Fourth Proportional to 13,740.30, 20,611.96 and 4,378.14

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Solution

The fourth proportional to 13,740.30, 20,611.96 and 4,378.14 is: 6,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.30 : 20,611.96 = 4,378.14 : x
  2. Step 2: Convert to fraction form
    13,740.30/20,611.96 = 4,378.14/x
  3. Step 3: Cross multiply
    13,740.30x = 20,611.96 × 4,378.14
  4. Step 4: Simplify right side
    13,740.30x = 90,242,046.55
  5. Step 5: Solve for x
    x = 90,242,046.55/13,740.30
  6. Step 6: Final answer
    x = 6,567.69

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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.