Home / 28,163.23-42,231.34-10,621.87

Finding the Fourth Proportional to 28,163.23, 42,231.34 and 10,621.87

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Solution

The fourth proportional to 28,163.23, 42,231.34 and 10,621.87 is: 15,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.23 : 42,231.34 = 10,621.87 : x
  2. Step 2: Convert to fraction form
    28,163.23/42,231.34 = 10,621.87/x
  3. Step 3: Cross multiply
    28,163.23x = 42,231.34 × 10,621.87
  4. Step 4: Simplify right side
    28,163.23x = 448,575,711.10
  5. Step 5: Solve for x
    x = 448,575,711.10/28,163.23
  6. Step 6: Final answer
    x = 15,927.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.