Home / 28,370.88-42,563.10-8,648.21

Finding the Fourth Proportional to 28,370.88, 42,563.10 and 8,648.21

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Solution

The fourth proportional to 28,370.88, 42,563.10 and 8,648.21 is: 12,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.88 : 42,563.10 = 8,648.21 : x
  2. Step 2: Convert to fraction form
    28,370.88/42,563.10 = 8,648.21/x
  3. Step 3: Cross multiply
    28,370.88x = 42,563.10 × 8,648.21
  4. Step 4: Simplify right side
    28,370.88x = 368,094,414.24
  5. Step 5: Solve for x
    x = 368,094,414.24/28,370.88
  6. Step 6: Final answer
    x = 12,974.37

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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.