Home / 21,164.26-31,748.76-8,683.78

Finding the Fourth Proportional to 21,164.26, 31,748.76 and 8,683.78

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Solution

The fourth proportional to 21,164.26, 31,748.76 and 8,683.78 is: 13,026.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.26 : 31,748.76 = 8,683.78 : x
  2. Step 2: Convert to fraction form
    21,164.26/31,748.76 = 8,683.78/x
  3. Step 3: Cross multiply
    21,164.26x = 31,748.76 × 8,683.78
  4. Step 4: Simplify right side
    21,164.26x = 275,699,247.11
  5. Step 5: Solve for x
    x = 275,699,247.11/21,164.26
  6. Step 6: Final answer
    x = 13,026.64

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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.