Home / 20,490.45-30,717.44-8,007.63

Finding the Fourth Proportional to 20,490.45, 30,717.44 and 8,007.63

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Solution

The fourth proportional to 20,490.45, 30,717.44 and 8,007.63 is: 12,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.45 : 30,717.44 = 8,007.63 : x
  2. Step 2: Convert to fraction form
    20,490.45/30,717.44 = 8,007.63/x
  3. Step 3: Cross multiply
    20,490.45x = 30,717.44 × 8,007.63
  4. Step 4: Simplify right side
    20,490.45x = 245,973,919.13
  5. Step 5: Solve for x
    x = 245,973,919.13/20,490.45
  6. Step 6: Final answer
    x = 12,004.32

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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.