Home / 22,687.64-31,309.62-13,736.78

Finding the Fourth Proportional to 22,687.64, 31,309.62 and 13,736.78

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Solution

The fourth proportional to 22,687.64, 31,309.62 and 13,736.78 is: 18,957.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,687.64 : 31,309.62 = 13,736.78 : x
  2. Step 2: Convert to fraction form
    22,687.64/31,309.62 = 13,736.78/x
  3. Step 3: Cross multiply
    22,687.64x = 31,309.62 × 13,736.78
  4. Step 4: Simplify right side
    22,687.64x = 430,093,361.82
  5. Step 5: Solve for x
    x = 430,093,361.82/22,687.64
  6. Step 6: Final answer
    x = 18,957.17

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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.