Home / 7,420.60-11,109.30-6,556.60

Finding the Fourth Proportional to 7,420.60, 11,109.30 and 6,556.60

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Solution

The fourth proportional to 7,420.60, 11,109.30 and 6,556.60 is: 9,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.60 : 11,109.30 = 6,556.60 : x
  2. Step 2: Convert to fraction form
    7,420.60/11,109.30 = 6,556.60/x
  3. Step 3: Cross multiply
    7,420.60x = 11,109.30 × 6,556.60
  4. Step 4: Simplify right side
    7,420.60x = 72,839,236.38
  5. Step 5: Solve for x
    x = 72,839,236.38/7,420.60
  6. Step 6: Final answer
    x = 9,815.81

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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.