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Finding the Fourth Proportional to 31,653.84, 43,693.29 and 18,230.45

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Solution

The fourth proportional to 31,653.84, 43,693.29 and 18,230.45 is: 25,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,653.84 : 43,693.29 = 18,230.45 : x
  2. Step 2: Convert to fraction form
    31,653.84/43,693.29 = 18,230.45/x
  3. Step 3: Cross multiply
    31,653.84x = 43,693.29 × 18,230.45
  4. Step 4: Simplify right side
    31,653.84x = 796,548,120.21
  5. Step 5: Solve for x
    x = 796,548,120.21/31,653.84
  6. Step 6: Final answer
    x = 25,164.34

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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.