Home / 28,371.26-42,563.70-8,648.60

Finding the Fourth Proportional to 28,371.26, 42,563.70 and 8,648.60

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Solution

The fourth proportional to 28,371.26, 42,563.70 and 8,648.60 is: 12,974.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.26 : 42,563.70 = 8,648.60 : x
  2. Step 2: Convert to fraction form
    28,371.26/42,563.70 = 8,648.60/x
  3. Step 3: Cross multiply
    28,371.26x = 42,563.70 × 8,648.60
  4. Step 4: Simplify right side
    28,371.26x = 368,116,415.82
  5. Step 5: Solve for x
    x = 368,116,415.82/28,371.26
  6. Step 6: Final answer
    x = 12,974.98

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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.