Home / 21,405.84-32,105.58-8,256.56

Finding the Fourth Proportional to 21,405.84, 32,105.58 and 8,256.56

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Solution

The fourth proportional to 21,405.84, 32,105.58 and 8,256.56 is: 12,383.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.84 : 32,105.58 = 8,256.56 : x
  2. Step 2: Convert to fraction form
    21,405.84/32,105.58 = 8,256.56/x
  3. Step 3: Cross multiply
    21,405.84x = 32,105.58 × 8,256.56
  4. Step 4: Simplify right side
    21,405.84x = 265,081,647.60
  5. Step 5: Solve for x
    x = 265,081,647.60/21,405.84
  6. Step 6: Final answer
    x = 12,383.61

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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.