Home / 21,362.19-32,039.64-8,207.79

Finding the Fourth Proportional to 21,362.19, 32,039.64 and 8,207.79

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Solution

The fourth proportional to 21,362.19, 32,039.64 and 8,207.79 is: 12,310.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.19 : 32,039.64 = 8,207.79 : x
  2. Step 2: Convert to fraction form
    21,362.19/32,039.64 = 8,207.79/x
  3. Step 3: Cross multiply
    21,362.19x = 32,039.64 × 8,207.79
  4. Step 4: Simplify right side
    21,362.19x = 262,974,636.80
  5. Step 5: Solve for x
    x = 262,974,636.80/21,362.19
  6. Step 6: Final answer
    x = 12,310.28

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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.