Home / 28,376.82-39,161.22-15,801.57

Finding the Fourth Proportional to 28,376.82, 39,161.22 and 15,801.57

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Solution

The fourth proportional to 28,376.82, 39,161.22 and 15,801.57 is: 21,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.82 : 39,161.22 = 15,801.57 : x
  2. Step 2: Convert to fraction form
    28,376.82/39,161.22 = 15,801.57/x
  3. Step 3: Cross multiply
    28,376.82x = 39,161.22 × 15,801.57
  4. Step 4: Simplify right side
    28,376.82x = 618,808,759.12
  5. Step 5: Solve for x
    x = 618,808,759.12/28,376.82
  6. Step 6: Final answer
    x = 21,806.84

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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.