Home / 21,338.04-29,441.78-12,380.36

Finding the Fourth Proportional to 21,338.04, 29,441.78 and 12,380.36

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Solution

The fourth proportional to 21,338.04, 29,441.78 and 12,380.36 is: 17,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.04 : 29,441.78 = 12,380.36 : x
  2. Step 2: Convert to fraction form
    21,338.04/29,441.78 = 12,380.36/x
  3. Step 3: Cross multiply
    21,338.04x = 29,441.78 × 12,380.36
  4. Step 4: Simplify right side
    21,338.04x = 364,499,835.44
  5. Step 5: Solve for x
    x = 364,499,835.44/21,338.04
  6. Step 6: Final answer
    x = 17,082.16

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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.