Home / 21,489.28-29,666.34-16,698.52

Finding the Fourth Proportional to 21,489.28, 29,666.34 and 16,698.52

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Solution

The fourth proportional to 21,489.28, 29,666.34 and 16,698.52 is: 23,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.28 : 29,666.34 = 16,698.52 : x
  2. Step 2: Convert to fraction form
    21,489.28/29,666.34 = 16,698.52/x
  3. Step 3: Cross multiply
    21,489.28x = 29,666.34 × 16,698.52
  4. Step 4: Simplify right side
    21,489.28x = 495,383,971.82
  5. Step 5: Solve for x
    x = 495,383,971.82/21,489.28
  6. Step 6: Final answer
    x = 23,052.61

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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.