Home / 28,952.75-39,954.80-15,704.75

Finding the Fourth Proportional to 28,952.75, 39,954.80 and 15,704.75

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Solution

The fourth proportional to 28,952.75, 39,954.80 and 15,704.75 is: 21,672.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,952.75 : 39,954.80 = 15,704.75 : x
  2. Step 2: Convert to fraction form
    28,952.75/39,954.80 = 15,704.75/x
  3. Step 3: Cross multiply
    28,952.75x = 39,954.80 × 15,704.75
  4. Step 4: Simplify right side
    28,952.75x = 627,480,145.30
  5. Step 5: Solve for x
    x = 627,480,145.30/28,952.75
  6. Step 6: Final answer
    x = 21,672.56

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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.