Home / 21,680.24-32,486.33-12,910.37

Finding the Fourth Proportional to 21,680.24, 32,486.33 and 12,910.37

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Solution

The fourth proportional to 21,680.24, 32,486.33 and 12,910.37 is: 19,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.24 : 32,486.33 = 12,910.37 : x
  2. Step 2: Convert to fraction form
    21,680.24/32,486.33 = 12,910.37/x
  3. Step 3: Cross multiply
    21,680.24x = 32,486.33 × 12,910.37
  4. Step 4: Simplify right side
    21,680.24x = 419,410,313.26
  5. Step 5: Solve for x
    x = 419,410,313.26/21,680.24
  6. Step 6: Final answer
    x = 19,345.28

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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.