Home / 21,185.56-29,235.66-11,754.04

Finding the Fourth Proportional to 21,185.56, 29,235.66 and 11,754.04

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Solution

The fourth proportional to 21,185.56, 29,235.66 and 11,754.04 is: 16,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.56 : 29,235.66 = 11,754.04 : x
  2. Step 2: Convert to fraction form
    21,185.56/29,235.66 = 11,754.04/x
  3. Step 3: Cross multiply
    21,185.56x = 29,235.66 × 11,754.04
  4. Step 4: Simplify right side
    21,185.56x = 343,637,117.07
  5. Step 5: Solve for x
    x = 343,637,117.07/21,185.56
  6. Step 6: Final answer
    x = 16,220.35

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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.