Home / 28,571.67-39,430.19-15,996.42

Finding the Fourth Proportional to 28,571.67, 39,430.19 and 15,996.42

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Solution

The fourth proportional to 28,571.67, 39,430.19 and 15,996.42 is: 22,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.67 : 39,430.19 = 15,996.42 : x
  2. Step 2: Convert to fraction form
    28,571.67/39,430.19 = 15,996.42/x
  3. Step 3: Cross multiply
    28,571.67x = 39,430.19 × 15,996.42
  4. Step 4: Simplify right side
    28,571.67x = 630,741,919.91
  5. Step 5: Solve for x
    x = 630,741,919.91/28,571.67
  6. Step 6: Final answer
    x = 22,075.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.