Home / 21,564.72-29,759.24-12,133.28

Finding the Fourth Proportional to 21,564.72, 29,759.24 and 12,133.28

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Solution

The fourth proportional to 21,564.72, 29,759.24 and 12,133.28 is: 16,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.72 : 29,759.24 = 12,133.28 : x
  2. Step 2: Convert to fraction form
    21,564.72/29,759.24 = 12,133.28/x
  3. Step 3: Cross multiply
    21,564.72x = 29,759.24 × 12,133.28
  4. Step 4: Simplify right side
    21,564.72x = 361,077,191.51
  5. Step 5: Solve for x
    x = 361,077,191.51/21,564.72
  6. Step 6: Final answer
    x = 16,743.88

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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.