Home / 28,954.75-39,957.56-15,706.75

Finding the Fourth Proportional to 28,954.75, 39,957.56 and 15,706.75

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Solution

The fourth proportional to 28,954.75, 39,957.56 and 15,706.75 is: 21,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.75 : 39,957.56 = 15,706.75 : x
  2. Step 2: Convert to fraction form
    28,954.75/39,957.56 = 15,706.75/x
  3. Step 3: Cross multiply
    28,954.75x = 39,957.56 × 15,706.75
  4. Step 4: Simplify right side
    28,954.75x = 627,603,405.53
  5. Step 5: Solve for x
    x = 627,603,405.53/28,954.75
  6. Step 6: Final answer
    x = 21,675.32

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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.