Home / 18,786.76-25,925.73-10,288.90

Finding the Fourth Proportional to 18,786.76, 25,925.73 and 10,288.90

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Solution

The fourth proportional to 18,786.76, 25,925.73 and 10,288.90 is: 14,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.76 : 25,925.73 = 10,288.90 : x
  2. Step 2: Convert to fraction form
    18,786.76/25,925.73 = 10,288.90/x
  3. Step 3: Cross multiply
    18,786.76x = 25,925.73 × 10,288.90
  4. Step 4: Simplify right side
    18,786.76x = 266,747,243.40
  5. Step 5: Solve for x
    x = 266,747,243.40/18,786.76
  6. Step 6: Final answer
    x = 14,198.68

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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.