Home / 18,705.21-28,059.03-5,556.48

Finding the Fourth Proportional to 18,705.21, 28,059.03 and 5,556.48

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Solution

The fourth proportional to 18,705.21, 28,059.03 and 5,556.48 is: 8,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.21 : 28,059.03 = 5,556.48 : x
  2. Step 2: Convert to fraction form
    18,705.21/28,059.03 = 5,556.48/x
  3. Step 3: Cross multiply
    18,705.21x = 28,059.03 × 5,556.48
  4. Step 4: Simplify right side
    18,705.21x = 155,909,439.01
  5. Step 5: Solve for x
    x = 155,909,439.01/18,705.21
  6. Step 6: Final answer
    x = 8,335.08

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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.