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Finding the Fourth Proportional to 18,775.69, 25,883.75 and 12,799.71

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Solution

The fourth proportional to 18,775.69, 25,883.75 and 12,799.71 is: 17,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.69 : 25,883.75 = 12,799.71 : x
  2. Step 2: Convert to fraction form
    18,775.69/25,883.75 = 12,799.71/x
  3. Step 3: Cross multiply
    18,775.69x = 25,883.75 × 12,799.71
  4. Step 4: Simplify right side
    18,775.69x = 331,304,525.71
  5. Step 5: Solve for x
    x = 331,304,525.71/18,775.69
  6. Step 6: Final answer
    x = 17,645.40

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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.