Home / 21,235.50-29,304.99-11,805.89

Finding the Fourth Proportional to 21,235.50, 29,304.99 and 11,805.89

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Solution

The fourth proportional to 21,235.50, 29,304.99 and 11,805.89 is: 16,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.50 : 29,304.99 = 11,805.89 : x
  2. Step 2: Convert to fraction form
    21,235.50/29,304.99 = 11,805.89/x
  3. Step 3: Cross multiply
    21,235.50x = 29,304.99 × 11,805.89
  4. Step 4: Simplify right side
    21,235.50x = 345,971,341.87
  5. Step 5: Solve for x
    x = 345,971,341.87/21,235.50
  6. Step 6: Final answer
    x = 16,292.12

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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.