Home / 18,371.40-25,356.78-10,818.60

Finding the Fourth Proportional to 18,371.40, 25,356.78 and 10,818.60

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Solution

The fourth proportional to 18,371.40, 25,356.78 and 10,818.60 is: 14,932.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.40 : 25,356.78 = 10,818.60 : x
  2. Step 2: Convert to fraction form
    18,371.40/25,356.78 = 10,818.60/x
  3. Step 3: Cross multiply
    18,371.40x = 25,356.78 × 10,818.60
  4. Step 4: Simplify right side
    18,371.40x = 274,324,860.11
  5. Step 5: Solve for x
    x = 274,324,860.11/18,371.40
  6. Step 6: Final answer
    x = 14,932.17

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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.