Home / 21,829.23-30,111.21-13,327.47

Finding the Fourth Proportional to 21,829.23, 30,111.21 and 13,327.47

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Solution

The fourth proportional to 21,829.23, 30,111.21 and 13,327.47 is: 18,383.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.23 : 30,111.21 = 13,327.47 : x
  2. Step 2: Convert to fraction form
    21,829.23/30,111.21 = 13,327.47/x
  3. Step 3: Cross multiply
    21,829.23x = 30,111.21 × 13,327.47
  4. Step 4: Simplify right side
    21,829.23x = 401,306,247.94
  5. Step 5: Solve for x
    x = 401,306,247.94/21,829.23
  6. Step 6: Final answer
    x = 18,383.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.