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Finding the Fourth Proportional to 18,404.84, 25,398.88 and 10,021.34

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Solution

The fourth proportional to 18,404.84, 25,398.88 and 10,021.34 is: 13,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.84 : 25,398.88 = 10,021.34 : x
  2. Step 2: Convert to fraction form
    18,404.84/25,398.88 = 10,021.34/x
  3. Step 3: Cross multiply
    18,404.84x = 25,398.88 × 10,021.34
  4. Step 4: Simplify right side
    18,404.84x = 254,530,660.05
  5. Step 5: Solve for x
    x = 254,530,660.05/18,404.84
  6. Step 6: Final answer
    x = 13,829.55

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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.