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Finding the Fourth Proportional to 14,504.58, 20,018.16 and 8,215.74

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Solution

The fourth proportional to 14,504.58, 20,018.16 and 8,215.74 is: 11,338.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,504.58 : 20,018.16 = 8,215.74 : x
  2. Step 2: Convert to fraction form
    14,504.58/20,018.16 = 8,215.74/x
  3. Step 3: Cross multiply
    14,504.58x = 20,018.16 × 8,215.74
  4. Step 4: Simplify right side
    14,504.58x = 164,463,997.84
  5. Step 5: Solve for x
    x = 164,463,997.84/14,504.58
  6. Step 6: Final answer
    x = 11,338.76

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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.