Home / 18,418.36-25,406.84-11,339.76

Finding the Fourth Proportional to 18,418.36, 25,406.84 and 11,339.76

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Solution

The fourth proportional to 18,418.36, 25,406.84 and 11,339.76 is: 15,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.36 : 25,406.84 = 11,339.76 : x
  2. Step 2: Convert to fraction form
    18,418.36/25,406.84 = 11,339.76/x
  3. Step 3: Cross multiply
    18,418.36x = 25,406.84 × 11,339.76
  4. Step 4: Simplify right side
    18,418.36x = 288,107,467.96
  5. Step 5: Solve for x
    x = 288,107,467.96/18,418.36
  6. Step 6: Final answer
    x = 15,642.41

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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.