Home / 28,356.37-39,129.24-16,420.52

Finding the Fourth Proportional to 28,356.37, 39,129.24 and 16,420.52

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Solution

The fourth proportional to 28,356.37, 39,129.24 and 16,420.52 is: 22,658.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.37 : 39,129.24 = 16,420.52 : x
  2. Step 2: Convert to fraction form
    28,356.37/39,129.24 = 16,420.52/x
  3. Step 3: Cross multiply
    28,356.37x = 39,129.24 × 16,420.52
  4. Step 4: Simplify right side
    28,356.37x = 642,522,468.00
  5. Step 5: Solve for x
    x = 642,522,468.00/28,356.37
  6. Step 6: Final answer
    x = 22,658.84

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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.