Home / 18,788.52-25,928.46-10,405.20

Finding the Fourth Proportional to 18,788.52, 25,928.46 and 10,405.20

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Solution

The fourth proportional to 18,788.52, 25,928.46 and 10,405.20 is: 14,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.52 : 25,928.46 = 10,405.20 : x
  2. Step 2: Convert to fraction form
    18,788.52/25,928.46 = 10,405.20/x
  3. Step 3: Cross multiply
    18,788.52x = 25,928.46 × 10,405.20
  4. Step 4: Simplify right side
    18,788.52x = 269,790,811.99
  5. Step 5: Solve for x
    x = 269,790,811.99/18,788.52
  6. Step 6: Final answer
    x = 14,359.34

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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.