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Finding the Fourth Proportional to 31,405.32, 43,336.62 and 17,254.62

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Solution

The fourth proportional to 31,405.32, 43,336.62 and 17,254.62 is: 23,809.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.32 : 43,336.62 = 17,254.62 : x
  2. Step 2: Convert to fraction form
    31,405.32/43,336.62 = 17,254.62/x
  3. Step 3: Cross multiply
    31,405.32x = 43,336.62 × 17,254.62
  4. Step 4: Simplify right side
    31,405.32x = 747,756,910.18
  5. Step 5: Solve for x
    x = 747,756,910.18/31,405.32
  6. Step 6: Final answer
    x = 23,809.88

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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.