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Finding the Fourth Proportional to 14,508.88, 20,020.86 and 8,221.24

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Solution

The fourth proportional to 14,508.88, 20,020.86 and 8,221.24 is: 11,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,508.88 : 20,020.86 = 8,221.24 : x
  2. Step 2: Convert to fraction form
    14,508.88/20,020.86 = 8,221.24/x
  3. Step 3: Cross multiply
    14,508.88x = 20,020.86 × 8,221.24
  4. Step 4: Simplify right side
    14,508.88x = 164,596,295.07
  5. Step 5: Solve for x
    x = 164,596,295.07/14,508.88
  6. Step 6: Final answer
    x = 11,344.52

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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.