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Finding the Fourth Proportional to 12,607.11, 18,910.67 and 12,588.89

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Solution

The fourth proportional to 12,607.11, 18,910.67 and 12,588.89 is: 18,883.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.11 : 18,910.67 = 12,588.89 : x
  2. Step 2: Convert to fraction form
    12,607.11/18,910.67 = 12,588.89/x
  3. Step 3: Cross multiply
    12,607.11x = 18,910.67 × 12,588.89
  4. Step 4: Simplify right side
    12,607.11x = 238,064,186.96
  5. Step 5: Solve for x
    x = 238,064,186.96/12,607.11
  6. Step 6: Final answer
    x = 18,883.33

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.