Home / 21,617.94-29,832.35-12,186.51

Finding the Fourth Proportional to 21,617.94, 29,832.35 and 12,186.51

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Solution

The fourth proportional to 21,617.94, 29,832.35 and 12,186.51 is: 16,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.94 : 29,832.35 = 12,186.51 : x
  2. Step 2: Convert to fraction form
    21,617.94/29,832.35 = 12,186.51/x
  3. Step 3: Cross multiply
    21,617.94x = 29,832.35 × 12,186.51
  4. Step 4: Simplify right side
    21,617.94x = 363,552,112.90
  5. Step 5: Solve for x
    x = 363,552,112.90/21,617.94
  6. Step 6: Final answer
    x = 16,817.15

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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.