Home / 21,205.70-29,261.76-11,773.28

Finding the Fourth Proportional to 21,205.70, 29,261.76 and 11,773.28

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Solution

The fourth proportional to 21,205.70, 29,261.76 and 11,773.28 is: 16,245.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.70 : 29,261.76 = 11,773.28 : x
  2. Step 2: Convert to fraction form
    21,205.70/29,261.76 = 11,773.28/x
  3. Step 3: Cross multiply
    21,205.70x = 29,261.76 × 11,773.28
  4. Step 4: Simplify right side
    21,205.70x = 344,506,893.77
  5. Step 5: Solve for x
    x = 344,506,893.77/21,205.70
  6. Step 6: Final answer
    x = 16,245.96

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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.