Home / 21,158.55-29,198.70-11,598.42

Finding the Fourth Proportional to 21,158.55, 29,198.70 and 11,598.42

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Solution

The fourth proportional to 21,158.55, 29,198.70 and 11,598.42 is: 16,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.55 : 29,198.70 = 11,598.42 : x
  2. Step 2: Convert to fraction form
    21,158.55/29,198.70 = 11,598.42/x
  3. Step 3: Cross multiply
    21,158.55x = 29,198.70 × 11,598.42
  4. Step 4: Simplify right side
    21,158.55x = 338,658,786.05
  5. Step 5: Solve for x
    x = 338,658,786.05/21,158.55
  6. Step 6: Final answer
    x = 16,005.77

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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.