Home / 21,158.64-29,204.14-12,211.46

Finding the Fourth Proportional to 21,158.64, 29,204.14 and 12,211.46

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Solution

The fourth proportional to 21,158.64, 29,204.14 and 12,211.46 is: 16,854.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.64 : 29,204.14 = 12,211.46 : x
  2. Step 2: Convert to fraction form
    21,158.64/29,204.14 = 12,211.46/x
  3. Step 3: Cross multiply
    21,158.64x = 29,204.14 × 12,211.46
  4. Step 4: Simplify right side
    21,158.64x = 356,625,187.44
  5. Step 5: Solve for x
    x = 356,625,187.44/21,158.64
  6. Step 6: Final answer
    x = 16,854.83

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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.