Home / 18,342.25-25,310.88-10,385.21

Finding the Fourth Proportional to 18,342.25, 25,310.88 and 10,385.21

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Solution

The fourth proportional to 18,342.25, 25,310.88 and 10,385.21 is: 14,330.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.25 : 25,310.88 = 10,385.21 : x
  2. Step 2: Convert to fraction form
    18,342.25/25,310.88 = 10,385.21/x
  3. Step 3: Cross multiply
    18,342.25x = 25,310.88 × 10,385.21
  4. Step 4: Simplify right side
    18,342.25x = 262,858,867.36
  5. Step 5: Solve for x
    x = 262,858,867.36/18,342.25
  6. Step 6: Final answer
    x = 14,330.79

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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.