Home / 28,911.12-43,367.04-9,189.60

Finding the Fourth Proportional to 28,911.12, 43,367.04 and 9,189.60

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Solution

The fourth proportional to 28,911.12, 43,367.04 and 9,189.60 is: 13,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.12 : 43,367.04 = 9,189.60 : x
  2. Step 2: Convert to fraction form
    28,911.12/43,367.04 = 9,189.60/x
  3. Step 3: Cross multiply
    28,911.12x = 43,367.04 × 9,189.60
  4. Step 4: Simplify right side
    28,911.12x = 398,525,750.78
  5. Step 5: Solve for x
    x = 398,525,750.78/28,911.12
  6. Step 6: Final answer
    x = 13,784.51

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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.