Home / 18,723.75-28,107.23-9,509.19

Finding the Fourth Proportional to 18,723.75, 28,107.23 and 9,509.19

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Solution

The fourth proportional to 18,723.75, 28,107.23 and 9,509.19 is: 14,274.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.75 : 28,107.23 = 9,509.19 : x
  2. Step 2: Convert to fraction form
    18,723.75/28,107.23 = 9,509.19/x
  3. Step 3: Cross multiply
    18,723.75x = 28,107.23 × 9,509.19
  4. Step 4: Simplify right side
    18,723.75x = 267,276,942.90
  5. Step 5: Solve for x
    x = 267,276,942.90/18,723.75
  6. Step 6: Final answer
    x = 14,274.75

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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.