Home / 18,738.36-25,860.78-10,780.92

Finding the Fourth Proportional to 18,738.36, 25,860.78 and 10,780.92

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Solution

The fourth proportional to 18,738.36, 25,860.78 and 10,780.92 is: 14,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.36 : 25,860.78 = 10,780.92 : x
  2. Step 2: Convert to fraction form
    18,738.36/25,860.78 = 10,780.92/x
  3. Step 3: Cross multiply
    18,738.36x = 25,860.78 × 10,780.92
  4. Step 4: Simplify right side
    18,738.36x = 278,803,000.32
  5. Step 5: Solve for x
    x = 278,803,000.32/18,738.36
  6. Step 6: Final answer
    x = 14,878.73

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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.