Home / 31,686.88-43,728.24-17,539.96

Finding the Fourth Proportional to 31,686.88, 43,728.24 and 17,539.96

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Solution

The fourth proportional to 31,686.88, 43,728.24 and 17,539.96 is: 24,205.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.88 : 43,728.24 = 17,539.96 : x
  2. Step 2: Convert to fraction form
    31,686.88/43,728.24 = 17,539.96/x
  3. Step 3: Cross multiply
    31,686.88x = 43,728.24 × 17,539.96
  4. Step 4: Simplify right side
    31,686.88x = 766,991,580.47
  5. Step 5: Solve for x
    x = 766,991,580.47/31,686.88
  6. Step 6: Final answer
    x = 24,205.34

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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.