Home / 28,147.24-42,232.02-10,621.72

Finding the Fourth Proportional to 28,147.24, 42,232.02 and 10,621.72

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Solution

The fourth proportional to 28,147.24, 42,232.02 and 10,621.72 is: 15,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.24 : 42,232.02 = 10,621.72 : x
  2. Step 2: Convert to fraction form
    28,147.24/42,232.02 = 10,621.72/x
  3. Step 3: Cross multiply
    28,147.24x = 42,232.02 × 10,621.72
  4. Step 4: Simplify right side
    28,147.24x = 448,576,691.47
  5. Step 5: Solve for x
    x = 448,576,691.47/28,147.24
  6. Step 6: Final answer
    x = 15,936.79

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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.