Home / 21,616.12-29,828.46-12,187

Finding the Fourth Proportional to 21,616.12, 29,828.46 and 12,187

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Solution

The fourth proportional to 21,616.12, 29,828.46 and 12,187 is: 16,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.12 : 29,828.46 = 12,187 : x
  2. Step 2: Convert to fraction form
    21,616.12/29,828.46 = 12,187/x
  3. Step 3: Cross multiply
    21,616.12x = 29,828.46 × 12,187
  4. Step 4: Simplify right side
    21,616.12x = 363,519,442.02
  5. Step 5: Solve for x
    x = 363,519,442.02/21,616.12
  6. Step 6: Final answer
    x = 16,817.05

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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.