Home / 21,185.07-29,235.30-11,753.64

Finding the Fourth Proportional to 21,185.07, 29,235.30 and 11,753.64

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Solution

The fourth proportional to 21,185.07, 29,235.30 and 11,753.64 is: 16,219.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.07 : 29,235.30 = 11,753.64 : x
  2. Step 2: Convert to fraction form
    21,185.07/29,235.30 = 11,753.64/x
  3. Step 3: Cross multiply
    21,185.07x = 29,235.30 × 11,753.64
  4. Step 4: Simplify right side
    21,185.07x = 343,621,191.49
  5. Step 5: Solve for x
    x = 343,621,191.49/21,185.07
  6. Step 6: Final answer
    x = 16,219.97

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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.