Home / 28,156.50-38,855.97-15,583.14

Finding the Fourth Proportional to 28,156.50, 38,855.97 and 15,583.14

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Solution

The fourth proportional to 28,156.50, 38,855.97 and 15,583.14 is: 21,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.50 : 38,855.97 = 15,583.14 : x
  2. Step 2: Convert to fraction form
    28,156.50/38,855.97 = 15,583.14/x
  3. Step 3: Cross multiply
    28,156.50x = 38,855.97 × 15,583.14
  4. Step 4: Simplify right side
    28,156.50x = 605,498,020.35
  5. Step 5: Solve for x
    x = 605,498,020.35/28,156.50
  6. Step 6: Final answer
    x = 21,504.73

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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.