Home / 28,245.67-38,982.12-16,312.75

Finding the Fourth Proportional to 28,245.67, 38,982.12 and 16,312.75

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Solution

The fourth proportional to 28,245.67, 38,982.12 and 16,312.75 is: 22,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.67 : 38,982.12 = 16,312.75 : x
  2. Step 2: Convert to fraction form
    28,245.67/38,982.12 = 16,312.75/x
  3. Step 3: Cross multiply
    28,245.67x = 38,982.12 × 16,312.75
  4. Step 4: Simplify right side
    28,245.67x = 635,905,578.03
  5. Step 5: Solve for x
    x = 635,905,578.03/28,245.67
  6. Step 6: Final answer
    x = 22,513.38

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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.