Home / 20,617.45-30,923.64-8,775.99

Finding the Fourth Proportional to 20,617.45, 30,923.64 and 8,775.99

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Solution

The fourth proportional to 20,617.45, 30,923.64 and 8,775.99 is: 13,162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.45 : 30,923.64 = 8,775.99 : x
  2. Step 2: Convert to fraction form
    20,617.45/30,923.64 = 8,775.99/x
  3. Step 3: Cross multiply
    20,617.45x = 30,923.64 × 8,775.99
  4. Step 4: Simplify right side
    20,617.45x = 271,385,555.40
  5. Step 5: Solve for x
    x = 271,385,555.40/20,617.45
  6. Step 6: Final answer
    x = 13,162.91

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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.