Home / 28,479.21-42,723.67-8,757.33

Finding the Fourth Proportional to 28,479.21, 42,723.67 and 8,757.33

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Solution

The fourth proportional to 28,479.21, 42,723.67 and 8,757.33 is: 13,137.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.21 : 42,723.67 = 8,757.33 : x
  2. Step 2: Convert to fraction form
    28,479.21/42,723.67 = 8,757.33/x
  3. Step 3: Cross multiply
    28,479.21x = 42,723.67 × 8,757.33
  4. Step 4: Simplify right side
    28,479.21x = 374,145,277.00
  5. Step 5: Solve for x
    x = 374,145,277.00/28,479.21
  6. Step 6: Final answer
    x = 13,137.49

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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.