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Finding the Fourth Proportional to 31,336, 43,243.68 and 17,188.88

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Solution

The fourth proportional to 31,336, 43,243.68 and 17,188.88 is: 23,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,336 : 43,243.68 = 17,188.88 : x
  2. Step 2: Convert to fraction form
    31,336/43,243.68 = 17,188.88/x
  3. Step 3: Cross multiply
    31,336x = 43,243.68 × 17,188.88
  4. Step 4: Simplify right side
    31,336x = 743,310,426.28
  5. Step 5: Solve for x
    x = 743,310,426.28/31,336
  6. Step 6: Final answer
    x = 23,720.65

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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.