Home / 18,821.78-25,974.09-10,323.98

Finding the Fourth Proportional to 18,821.78, 25,974.09 and 10,323.98

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Solution

The fourth proportional to 18,821.78, 25,974.09 and 10,323.98 is: 14,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.78 : 25,974.09 = 10,323.98 : x
  2. Step 2: Convert to fraction form
    18,821.78/25,974.09 = 10,323.98/x
  3. Step 3: Cross multiply
    18,821.78x = 25,974.09 × 10,323.98
  4. Step 4: Simplify right side
    18,821.78x = 268,155,855.81
  5. Step 5: Solve for x
    x = 268,155,855.81/18,821.78
  6. Step 6: Final answer
    x = 14,247.11

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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.