Home / 15,687.10-21,648.24-8,517.03

Finding the Fourth Proportional to 15,687.10, 21,648.24 and 8,517.03

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Solution

The fourth proportional to 15,687.10, 21,648.24 and 8,517.03 is: 11,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.10 : 21,648.24 = 8,517.03 : x
  2. Step 2: Convert to fraction form
    15,687.10/21,648.24 = 8,517.03/x
  3. Step 3: Cross multiply
    15,687.10x = 21,648.24 × 8,517.03
  4. Step 4: Simplify right side
    15,687.10x = 184,378,596.41
  5. Step 5: Solve for x
    x = 184,378,596.41/15,687.10
  6. Step 6: Final answer
    x = 11,753.52

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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.