Home / 28,369.06-39,147.78-15,793

Finding the Fourth Proportional to 28,369.06, 39,147.78 and 15,793

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Solution

The fourth proportional to 28,369.06, 39,147.78 and 15,793 is: 21,793.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.06 : 39,147.78 = 15,793 : x
  2. Step 2: Convert to fraction form
    28,369.06/39,147.78 = 15,793/x
  3. Step 3: Cross multiply
    28,369.06x = 39,147.78 × 15,793
  4. Step 4: Simplify right side
    28,369.06x = 618,260,889.54
  5. Step 5: Solve for x
    x = 618,260,889.54/28,369.06
  6. Step 6: Final answer
    x = 21,793.49

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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.