Home / 13,740.12-20,597.40-5,418.60

Finding the Fourth Proportional to 13,740.12, 20,597.40 and 5,418.60

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Solution

The fourth proportional to 13,740.12, 20,597.40 and 5,418.60 is: 8,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.12 : 20,597.40 = 5,418.60 : x
  2. Step 2: Convert to fraction form
    13,740.12/20,597.40 = 5,418.60/x
  3. Step 3: Cross multiply
    13,740.12x = 20,597.40 × 5,418.60
  4. Step 4: Simplify right side
    13,740.12x = 111,609,071.64
  5. Step 5: Solve for x
    x = 111,609,071.64/13,740.12
  6. Step 6: Final answer
    x = 8,122.86

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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.