Home / 18,772.16-25,889.63-15,795

Finding the Fourth Proportional to 18,772.16, 25,889.63 and 15,795

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Solution

The fourth proportional to 18,772.16, 25,889.63 and 15,795 is: 21,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.16 : 25,889.63 = 15,795 : x
  2. Step 2: Convert to fraction form
    18,772.16/25,889.63 = 15,795/x
  3. Step 3: Cross multiply
    18,772.16x = 25,889.63 × 15,795
  4. Step 4: Simplify right side
    18,772.16x = 408,926,626.88
  5. Step 5: Solve for x
    x = 408,926,626.88/18,772.16
  6. Step 6: Final answer
    x = 21,783.68

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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.