Home / 31,695.66-43,730.15-21,087.09

Finding the Fourth Proportional to 31,695.66, 43,730.15 and 21,087.09

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Solution

The fourth proportional to 31,695.66, 43,730.15 and 21,087.09 is: 29,093.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,695.66 : 43,730.15 = 21,087.09 : x
  2. Step 2: Convert to fraction form
    31,695.66/43,730.15 = 21,087.09/x
  3. Step 3: Cross multiply
    31,695.66x = 43,730.15 × 21,087.09
  4. Step 4: Simplify right side
    31,695.66x = 922,141,503.33
  5. Step 5: Solve for x
    x = 922,141,503.33/31,695.66
  6. Step 6: Final answer
    x = 29,093.62

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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.