Home / 28,811-39,759.18-16,236.20

Finding the Fourth Proportional to 28,811, 39,759.18 and 16,236.20

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Solution

The fourth proportional to 28,811, 39,759.18 and 16,236.20 is: 22,405.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811 : 39,759.18 = 16,236.20 : x
  2. Step 2: Convert to fraction form
    28,811/39,759.18 = 16,236.20/x
  3. Step 3: Cross multiply
    28,811x = 39,759.18 × 16,236.20
  4. Step 4: Simplify right side
    28,811x = 645,537,998.32
  5. Step 5: Solve for x
    x = 645,537,998.32/28,811
  6. Step 6: Final answer
    x = 22,405.96

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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.