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Finding the Fourth Proportional to 14,504.63, 20,015.30 and 8,216.87

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Solution

The fourth proportional to 14,504.63, 20,015.30 and 8,216.87 is: 11,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,504.63 : 20,015.30 = 8,216.87 : x
  2. Step 2: Convert to fraction form
    14,504.63/20,015.30 = 8,216.87/x
  3. Step 3: Cross multiply
    14,504.63x = 20,015.30 × 8,216.87
  4. Step 4: Simplify right side
    14,504.63x = 164,463,038.58
  5. Step 5: Solve for x
    x = 164,463,038.58/14,504.63
  6. Step 6: Final answer
    x = 11,338.66

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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.