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Finding the Fourth Proportional to 18,265.84, 25,208.40 and 10,308.40

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Solution

The fourth proportional to 18,265.84, 25,208.40 and 10,308.40 is: 14,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.84 : 25,208.40 = 10,308.40 : x
  2. Step 2: Convert to fraction form
    18,265.84/25,208.40 = 10,308.40/x
  3. Step 3: Cross multiply
    18,265.84x = 25,208.40 × 10,308.40
  4. Step 4: Simplify right side
    18,265.84x = 259,858,270.56
  5. Step 5: Solve for x
    x = 259,858,270.56/18,265.84
  6. Step 6: Final answer
    x = 14,226.46

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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.