Home / 21,241.12-29,311.76-11,809.60

Finding the Fourth Proportional to 21,241.12, 29,311.76 and 11,809.60

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Solution

The fourth proportional to 21,241.12, 29,311.76 and 11,809.60 is: 16,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.12 : 29,311.76 = 11,809.60 : x
  2. Step 2: Convert to fraction form
    21,241.12/29,311.76 = 11,809.60/x
  3. Step 3: Cross multiply
    21,241.12x = 29,311.76 × 11,809.60
  4. Step 4: Simplify right side
    21,241.12x = 346,160,160.90
  5. Step 5: Solve for x
    x = 346,160,160.90/21,241.12
  6. Step 6: Final answer
    x = 16,296.70

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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.