Home / 28,271.03-39,012.50-15,694.97

Finding the Fourth Proportional to 28,271.03, 39,012.50 and 15,694.97

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Solution

The fourth proportional to 28,271.03, 39,012.50 and 15,694.97 is: 21,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.03 : 39,012.50 = 15,694.97 : x
  2. Step 2: Convert to fraction form
    28,271.03/39,012.50 = 15,694.97/x
  3. Step 3: Cross multiply
    28,271.03x = 39,012.50 × 15,694.97
  4. Step 4: Simplify right side
    28,271.03x = 612,299,919.31
  5. Step 5: Solve for x
    x = 612,299,919.31/28,271.03
  6. Step 6: Final answer
    x = 21,658.21

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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.