Home / 21,187.29-29,241.03-12,234.75

Finding the Fourth Proportional to 21,187.29, 29,241.03 and 12,234.75

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Solution

The fourth proportional to 21,187.29, 29,241.03 and 12,234.75 is: 16,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.29 : 29,241.03 = 12,234.75 : x
  2. Step 2: Convert to fraction form
    21,187.29/29,241.03 = 12,234.75/x
  3. Step 3: Cross multiply
    21,187.29x = 29,241.03 × 12,234.75
  4. Step 4: Simplify right side
    21,187.29x = 357,756,691.79
  5. Step 5: Solve for x
    x = 357,756,691.79/21,187.29
  6. Step 6: Final answer
    x = 16,885.44

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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.