Home / 21,089.13-29,103.60-11,658.30

Finding the Fourth Proportional to 21,089.13, 29,103.60 and 11,658.30

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Solution

The fourth proportional to 21,089.13, 29,103.60 and 11,658.30 is: 16,088.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.13 : 29,103.60 = 11,658.30 : x
  2. Step 2: Convert to fraction form
    21,089.13/29,103.60 = 11,658.30/x
  3. Step 3: Cross multiply
    21,089.13x = 29,103.60 × 11,658.30
  4. Step 4: Simplify right side
    21,089.13x = 339,298,499.88
  5. Step 5: Solve for x
    x = 339,298,499.88/21,089.13
  6. Step 6: Final answer
    x = 16,088.79

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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.