Home / 28,280.17-39,028.44-15,704.92

Finding the Fourth Proportional to 28,280.17, 39,028.44 and 15,704.92

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Solution

The fourth proportional to 28,280.17, 39,028.44 and 15,704.92 is: 21,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.17 : 39,028.44 = 15,704.92 : x
  2. Step 2: Convert to fraction form
    28,280.17/39,028.44 = 15,704.92/x
  3. Step 3: Cross multiply
    28,280.17x = 39,028.44 × 15,704.92
  4. Step 4: Simplify right side
    28,280.17x = 612,938,527.92
  5. Step 5: Solve for x
    x = 612,938,527.92/28,280.17
  6. Step 6: Final answer
    x = 21,673.79

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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.