Home / 21,204.98-29,270.73-18,208.79

Finding the Fourth Proportional to 21,204.98, 29,270.73 and 18,208.79

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Solution

The fourth proportional to 21,204.98, 29,270.73 and 18,208.79 is: 25,134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.98 : 29,270.73 = 18,208.79 : x
  2. Step 2: Convert to fraction form
    21,204.98/29,270.73 = 18,208.79/x
  3. Step 3: Cross multiply
    21,204.98x = 29,270.73 × 18,208.79
  4. Step 4: Simplify right side
    21,204.98x = 532,984,575.72
  5. Step 5: Solve for x
    x = 532,984,575.72/21,204.98
  6. Step 6: Final answer
    x = 25,134.88

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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.