Home / 18,378.75-25,365.09-17,878.37

Finding the Fourth Proportional to 18,378.75, 25,365.09 and 17,878.37

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Solution

The fourth proportional to 18,378.75, 25,365.09 and 17,878.37 is: 24,674.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.75 : 25,365.09 = 17,878.37 : x
  2. Step 2: Convert to fraction form
    18,378.75/25,365.09 = 17,878.37/x
  3. Step 3: Cross multiply
    18,378.75x = 25,365.09 × 17,878.37
  4. Step 4: Simplify right side
    18,378.75x = 453,486,400.69
  5. Step 5: Solve for x
    x = 453,486,400.69/18,378.75
  6. Step 6: Final answer
    x = 24,674.50

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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.