Home / 18,685.87-25,778.40-11,876.25

Finding the Fourth Proportional to 18,685.87, 25,778.40 and 11,876.25

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Solution

The fourth proportional to 18,685.87, 25,778.40 and 11,876.25 is: 16,384.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.87 : 25,778.40 = 11,876.25 : x
  2. Step 2: Convert to fraction form
    18,685.87/25,778.40 = 11,876.25/x
  3. Step 3: Cross multiply
    18,685.87x = 25,778.40 × 11,876.25
  4. Step 4: Simplify right side
    18,685.87x = 306,150,723
  5. Step 5: Solve for x
    x = 306,150,723/18,685.87
  6. Step 6: Final answer
    x = 16,384.08

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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.