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Finding the Fourth Proportional to 20,332.46, 30,450.06 and 12,913.70

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Solution

The fourth proportional to 20,332.46, 30,450.06 and 12,913.70 is: 19,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.46 : 30,450.06 = 12,913.70 : x
  2. Step 2: Convert to fraction form
    20,332.46/30,450.06 = 12,913.70/x
  3. Step 3: Cross multiply
    20,332.46x = 30,450.06 × 12,913.70
  4. Step 4: Simplify right side
    20,332.46x = 393,222,939.82
  5. Step 5: Solve for x
    x = 393,222,939.82/20,332.46
  6. Step 6: Final answer
    x = 19,339.66

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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.