Home / 21,240.30-29,311.62-11,808.84

Finding the Fourth Proportional to 21,240.30, 29,311.62 and 11,808.84

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Solution

The fourth proportional to 21,240.30, 29,311.62 and 11,808.84 is: 16,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.30 : 29,311.62 = 11,808.84 : x
  2. Step 2: Convert to fraction form
    21,240.30/29,311.62 = 11,808.84/x
  3. Step 3: Cross multiply
    21,240.30x = 29,311.62 × 11,808.84
  4. Step 4: Simplify right side
    21,240.30x = 346,136,230.72
  5. Step 5: Solve for x
    x = 346,136,230.72/21,240.30
  6. Step 6: Final answer
    x = 16,296.20

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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.