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Finding the Fourth Proportional to 18,404.32, 25,398 and 10,020.64

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Solution

The fourth proportional to 18,404.32, 25,398 and 10,020.64 is: 13,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.32 : 25,398 = 10,020.64 : x
  2. Step 2: Convert to fraction form
    18,404.32/25,398 = 10,020.64/x
  3. Step 3: Cross multiply
    18,404.32x = 25,398 × 10,020.64
  4. Step 4: Simplify right side
    18,404.32x = 254,504,214.72
  5. Step 5: Solve for x
    x = 254,504,214.72/18,404.32
  6. Step 6: Final answer
    x = 13,828.50

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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.