Home / 31,621.36-43,639.15-18,194.65

Finding the Fourth Proportional to 31,621.36, 43,639.15 and 18,194.65

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Solution

The fourth proportional to 31,621.36, 43,639.15 and 18,194.65 is: 25,109.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.36 : 43,639.15 = 18,194.65 : x
  2. Step 2: Convert to fraction form
    31,621.36/43,639.15 = 18,194.65/x
  3. Step 3: Cross multiply
    31,621.36x = 43,639.15 × 18,194.65
  4. Step 4: Simplify right side
    31,621.36x = 793,999,106.03
  5. Step 5: Solve for x
    x = 793,999,106.03/31,621.36
  6. Step 6: Final answer
    x = 25,109.58

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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.