Home / 21,245.09-31,867.70-5,662.71

Finding the Fourth Proportional to 21,245.09, 31,867.70 and 5,662.71

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Solution

The fourth proportional to 21,245.09, 31,867.70 and 5,662.71 is: 8,494.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.09 : 31,867.70 = 5,662.71 : x
  2. Step 2: Convert to fraction form
    21,245.09/31,867.70 = 5,662.71/x
  3. Step 3: Cross multiply
    21,245.09x = 31,867.70 × 5,662.71
  4. Step 4: Simplify right side
    21,245.09x = 180,457,515.15
  5. Step 5: Solve for x
    x = 180,457,515.15/21,245.09
  6. Step 6: Final answer
    x = 8,494.08

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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.