Home / 21,169.16-29,212.30-11,609

Finding the Fourth Proportional to 21,169.16, 29,212.30 and 11,609

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Solution

The fourth proportional to 21,169.16, 29,212.30 and 11,609 is: 16,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.16 : 29,212.30 = 11,609 : x
  2. Step 2: Convert to fraction form
    21,169.16/29,212.30 = 11,609/x
  3. Step 3: Cross multiply
    21,169.16x = 29,212.30 × 11,609
  4. Step 4: Simplify right side
    21,169.16x = 339,125,590.70
  5. Step 5: Solve for x
    x = 339,125,590.70/21,169.16
  6. Step 6: Final answer
    x = 16,019.79

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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.