Home / 21,235.53-29,305.49-11,803.89

Finding the Fourth Proportional to 21,235.53, 29,305.49 and 11,803.89

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Solution

The fourth proportional to 21,235.53, 29,305.49 and 11,803.89 is: 16,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.53 : 29,305.49 = 11,803.89 : x
  2. Step 2: Convert to fraction form
    21,235.53/29,305.49 = 11,803.89/x
  3. Step 3: Cross multiply
    21,235.53x = 29,305.49 × 11,803.89
  4. Step 4: Simplify right side
    21,235.53x = 345,918,721.34
  5. Step 5: Solve for x
    x = 345,918,721.34/21,235.53
  6. Step 6: Final answer
    x = 16,289.62

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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.