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Finding the Fourth Proportional to 12,630.34, 18,953.97 and 4,422.34

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Solution

The fourth proportional to 12,630.34, 18,953.97 and 4,422.34 is: 6,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.34 : 18,953.97 = 4,422.34 : x
  2. Step 2: Convert to fraction form
    12,630.34/18,953.97 = 4,422.34/x
  3. Step 3: Cross multiply
    12,630.34x = 18,953.97 × 4,422.34
  4. Step 4: Simplify right side
    12,630.34x = 83,820,899.69
  5. Step 5: Solve for x
    x = 83,820,899.69/12,630.34
  6. Step 6: Final answer
    x = 6,636.47

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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.