Home / 20,006.45-30,007.18-12,510.66

Finding the Fourth Proportional to 20,006.45, 30,007.18 and 12,510.66

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Solution

The fourth proportional to 20,006.45, 30,007.18 and 12,510.66 is: 18,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,006.45 : 30,007.18 = 12,510.66 : x
  2. Step 2: Convert to fraction form
    20,006.45/30,007.18 = 12,510.66/x
  3. Step 3: Cross multiply
    20,006.45x = 30,007.18 × 12,510.66
  4. Step 4: Simplify right side
    20,006.45x = 375,409,626.54
  5. Step 5: Solve for x
    x = 375,409,626.54/20,006.45
  6. Step 6: Final answer
    x = 18,764.43

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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.