Home / 31,270.96-43,157.64-18,695.44

Finding the Fourth Proportional to 31,270.96, 43,157.64 and 18,695.44

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Solution

The fourth proportional to 31,270.96, 43,157.64 and 18,695.44 is: 25,801.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,270.96 : 43,157.64 = 18,695.44 : x
  2. Step 2: Convert to fraction form
    31,270.96/43,157.64 = 18,695.44/x
  3. Step 3: Cross multiply
    31,270.96x = 43,157.64 × 18,695.44
  4. Step 4: Simplify right side
    31,270.96x = 806,851,069.16
  5. Step 5: Solve for x
    x = 806,851,069.16/31,270.96
  6. Step 6: Final answer
    x = 25,801.93

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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.