Home / 18,789.14-25,928.98-10,405.64

Finding the Fourth Proportional to 18,789.14, 25,928.98 and 10,405.64

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Solution

The fourth proportional to 18,789.14, 25,928.98 and 10,405.64 is: 14,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.14 : 25,928.98 = 10,405.64 : x
  2. Step 2: Convert to fraction form
    18,789.14/25,928.98 = 10,405.64/x
  3. Step 3: Cross multiply
    18,789.14x = 25,928.98 × 10,405.64
  4. Step 4: Simplify right side
    18,789.14x = 269,807,631.45
  5. Step 5: Solve for x
    x = 269,807,631.45/18,789.14
  6. Step 6: Final answer
    x = 14,359.76

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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.