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Finding the Fourth Proportional to 14,630.26, 20,187.89 and 8,340.98

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Solution

The fourth proportional to 14,630.26, 20,187.89 and 8,340.98 is: 11,509.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.26 : 20,187.89 = 8,340.98 : x
  2. Step 2: Convert to fraction form
    14,630.26/20,187.89 = 8,340.98/x
  3. Step 3: Cross multiply
    14,630.26x = 20,187.89 × 8,340.98
  4. Step 4: Simplify right side
    14,630.26x = 168,386,786.73
  5. Step 5: Solve for x
    x = 168,386,786.73/14,630.26
  6. Step 6: Final answer
    x = 11,509.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.