Home / 21,185.92-29,235.60-11,754.40

Finding the Fourth Proportional to 21,185.92, 29,235.60 and 11,754.40

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Solution

The fourth proportional to 21,185.92, 29,235.60 and 11,754.40 is: 16,220.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.92 : 29,235.60 = 11,754.40 : x
  2. Step 2: Convert to fraction form
    21,185.92/29,235.60 = 11,754.40/x
  3. Step 3: Cross multiply
    21,185.92x = 29,235.60 × 11,754.40
  4. Step 4: Simplify right side
    21,185.92x = 343,646,936.64
  5. Step 5: Solve for x
    x = 343,646,936.64/21,185.92
  6. Step 6: Final answer
    x = 16,220.53

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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.