Home / 28,418.39-42,639.87-15,255.39

Finding the Fourth Proportional to 28,418.39, 42,639.87 and 15,255.39

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Solution

The fourth proportional to 28,418.39, 42,639.87 and 15,255.39 is: 22,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.39 : 42,639.87 = 15,255.39 : x
  2. Step 2: Convert to fraction form
    28,418.39/42,639.87 = 15,255.39/x
  3. Step 3: Cross multiply
    28,418.39x = 42,639.87 × 15,255.39
  4. Step 4: Simplify right side
    28,418.39x = 650,487,846.40
  5. Step 5: Solve for x
    x = 650,487,846.40/28,418.39
  6. Step 6: Final answer
    x = 22,889.68

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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.