Home / 18,995.45-28,496.51-6,516.78

Finding the Fourth Proportional to 18,995.45, 28,496.51 and 6,516.78

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Solution

The fourth proportional to 18,995.45, 28,496.51 and 6,516.78 is: 9,776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.45 : 28,496.51 = 6,516.78 : x
  2. Step 2: Convert to fraction form
    18,995.45/28,496.51 = 6,516.78/x
  3. Step 3: Cross multiply
    18,995.45x = 28,496.51 × 6,516.78
  4. Step 4: Simplify right side
    18,995.45x = 185,705,453.85
  5. Step 5: Solve for x
    x = 185,705,453.85/18,995.45
  6. Step 6: Final answer
    x = 9,776.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.