Home / 21,212.29-31,829.37-8,741.53

Finding the Fourth Proportional to 21,212.29, 31,829.37 and 8,741.53

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Solution

The fourth proportional to 21,212.29, 31,829.37 and 8,741.53 is: 13,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.29 : 31,829.37 = 8,741.53 : x
  2. Step 2: Convert to fraction form
    21,212.29/31,829.37 = 8,741.53/x
  3. Step 3: Cross multiply
    21,212.29x = 31,829.37 × 8,741.53
  4. Step 4: Simplify right side
    21,212.29x = 278,237,392.74
  5. Step 5: Solve for x
    x = 278,237,392.74/21,212.29
  6. Step 6: Final answer
    x = 13,116.80

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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.