Home / 28,232.84-42,374.64-20,745.92

Finding the Fourth Proportional to 28,232.84, 42,374.64 and 20,745.92

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Solution

The fourth proportional to 28,232.84, 42,374.64 and 20,745.92 is: 31,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232.84 : 42,374.64 = 20,745.92 : x
  2. Step 2: Convert to fraction form
    28,232.84/42,374.64 = 20,745.92/x
  3. Step 3: Cross multiply
    28,232.84x = 42,374.64 × 20,745.92
  4. Step 4: Simplify right side
    28,232.84x = 879,100,891.47
  5. Step 5: Solve for x
    x = 879,100,891.47/28,232.84
  6. Step 6: Final answer
    x = 31,137.53

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1.5x scale

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.