Home / 28,735.82-39,657.20-15,991.84

Finding the Fourth Proportional to 28,735.82, 39,657.20 and 15,991.84

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Solution

The fourth proportional to 28,735.82, 39,657.20 and 15,991.84 is: 22,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,735.82 : 39,657.20 = 15,991.84 : x
  2. Step 2: Convert to fraction form
    28,735.82/39,657.20 = 15,991.84/x
  3. Step 3: Cross multiply
    28,735.82x = 39,657.20 × 15,991.84
  4. Step 4: Simplify right side
    28,735.82x = 634,191,538.08
  5. Step 5: Solve for x
    x = 634,191,538.08/28,735.82
  6. Step 6: Final answer
    x = 22,069.73

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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.