Home / 28,540.75-42,830.57-10,072.75

Finding the Fourth Proportional to 28,540.75, 42,830.57 and 10,072.75

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Solution

The fourth proportional to 28,540.75, 42,830.57 and 10,072.75 is: 15,115.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.75 : 42,830.57 = 10,072.75 : x
  2. Step 2: Convert to fraction form
    28,540.75/42,830.57 = 10,072.75/x
  3. Step 3: Cross multiply
    28,540.75x = 42,830.57 × 10,072.75
  4. Step 4: Simplify right side
    28,540.75x = 431,421,623.97
  5. Step 5: Solve for x
    x = 431,421,623.97/28,540.75
  6. Step 6: Final answer
    x = 15,115.99

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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.