Home / 28,489.14-39,315.44-15,742.62

Finding the Fourth Proportional to 28,489.14, 39,315.44 and 15,742.62

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Solution

The fourth proportional to 28,489.14, 39,315.44 and 15,742.62 is: 21,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.14 : 39,315.44 = 15,742.62 : x
  2. Step 2: Convert to fraction form
    28,489.14/39,315.44 = 15,742.62/x
  3. Step 3: Cross multiply
    28,489.14x = 39,315.44 × 15,742.62
  4. Step 4: Simplify right side
    28,489.14x = 618,928,032.05
  5. Step 5: Solve for x
    x = 618,928,032.05/28,489.14
  6. Step 6: Final answer
    x = 21,725.05

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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.