Home / 21,645.56-32,472.75-8,318

Finding the Fourth Proportional to 21,645.56, 32,472.75 and 8,318

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Solution

The fourth proportional to 21,645.56, 32,472.75 and 8,318 is: 12,478.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.56 : 32,472.75 = 8,318 : x
  2. Step 2: Convert to fraction form
    21,645.56/32,472.75 = 8,318/x
  3. Step 3: Cross multiply
    21,645.56x = 32,472.75 × 8,318
  4. Step 4: Simplify right side
    21,645.56x = 270,108,334.50
  5. Step 5: Solve for x
    x = 270,108,334.50/21,645.56
  6. Step 6: Final answer
    x = 12,478.69

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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.