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Finding the Fourth Proportional to 14,649.80, 20,216.24 and 8,276.62

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Solution

The fourth proportional to 14,649.80, 20,216.24 and 8,276.62 is: 11,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.80 : 20,216.24 = 8,276.62 : x
  2. Step 2: Convert to fraction form
    14,649.80/20,216.24 = 8,276.62/x
  3. Step 3: Cross multiply
    14,649.80x = 20,216.24 × 8,276.62
  4. Step 4: Simplify right side
    14,649.80x = 167,322,136.31
  5. Step 5: Solve for x
    x = 167,322,136.31/14,649.80
  6. Step 6: Final answer
    x = 11,421.46

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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.