Home / 21,302.56-29,399.04-11,871.52

Finding the Fourth Proportional to 21,302.56, 29,399.04 and 11,871.52

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Solution

The fourth proportional to 21,302.56, 29,399.04 and 11,871.52 is: 16,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.56 : 29,399.04 = 11,871.52 : x
  2. Step 2: Convert to fraction form
    21,302.56/29,399.04 = 11,871.52/x
  3. Step 3: Cross multiply
    21,302.56x = 29,399.04 × 11,871.52
  4. Step 4: Simplify right side
    21,302.56x = 349,011,291.34
  5. Step 5: Solve for x
    x = 349,011,291.34/21,302.56
  6. Step 6: Final answer
    x = 16,383.54

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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.