Home / 28,717-39,631.89-16,144.18

Finding the Fourth Proportional to 28,717, 39,631.89 and 16,144.18

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Solution

The fourth proportional to 28,717, 39,631.89 and 16,144.18 is: 22,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717 : 39,631.89 = 16,144.18 : x
  2. Step 2: Convert to fraction form
    28,717/39,631.89 = 16,144.18/x
  3. Step 3: Cross multiply
    28,717x = 39,631.89 × 16,144.18
  4. Step 4: Simplify right side
    28,717x = 639,824,365.90
  5. Step 5: Solve for x
    x = 639,824,365.90/28,717
  6. Step 6: Final answer
    x = 22,280.33

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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.