Home / 15,757.45-21,745.00-8,587.43

Finding the Fourth Proportional to 15,757.45, 21,745.00 and 8,587.43

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Solution

The fourth proportional to 15,757.45, 21,745.00 and 8,587.43 is: 11,850.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.45 : 21,745.00 = 8,587.43 : x
  2. Step 2: Convert to fraction form
    15,757.45/21,745.00 = 8,587.43/x
  3. Step 3: Cross multiply
    15,757.45x = 21,745.00 × 8,587.43
  4. Step 4: Simplify right side
    15,757.45x = 186,733,648.90
  5. Step 5: Solve for x
    x = 186,733,648.90/15,757.45
  6. Step 6: Final answer
    x = 11,850.50

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1.5x scale

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.