Home / 31,392.60-43,321.56-18,817.32

Finding the Fourth Proportional to 31,392.60, 43,321.56 and 18,817.32

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Solution

The fourth proportional to 31,392.60, 43,321.56 and 18,817.32 is: 25,967.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,392.60 : 43,321.56 = 18,817.32 : x
  2. Step 2: Convert to fraction form
    31,392.60/43,321.56 = 18,817.32/x
  3. Step 3: Cross multiply
    31,392.60x = 43,321.56 × 18,817.32
  4. Step 4: Simplify right side
    31,392.60x = 815,195,657.42
  5. Step 5: Solve for x
    x = 815,195,657.42/31,392.60
  6. Step 6: Final answer
    x = 25,967.76

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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.