Home / 25,868.57-38,858.13-18,520.25

Finding the Fourth Proportional to 25,868.57, 38,858.13 and 18,520.25

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Solution

The fourth proportional to 25,868.57, 38,858.13 and 18,520.25 is: 27,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.57 : 38,858.13 = 18,520.25 : x
  2. Step 2: Convert to fraction form
    25,868.57/38,858.13 = 18,520.25/x
  3. Step 3: Cross multiply
    25,868.57x = 38,858.13 × 18,520.25
  4. Step 4: Simplify right side
    25,868.57x = 719,662,087.84
  5. Step 5: Solve for x
    x = 719,662,087.84/25,868.57
  6. Step 6: Final answer
    x = 27,819.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.