Home / 31,751.66-43,804.94-20,419.62

Finding the Fourth Proportional to 31,751.66, 43,804.94 and 20,419.62

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Solution

The fourth proportional to 31,751.66, 43,804.94 and 20,419.62 is: 28,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.66 : 43,804.94 = 20,419.62 : x
  2. Step 2: Convert to fraction form
    31,751.66/43,804.94 = 20,419.62/x
  3. Step 3: Cross multiply
    31,751.66x = 43,804.94 × 20,419.62
  4. Step 4: Simplify right side
    31,751.66x = 894,480,228.92
  5. Step 5: Solve for x
    x = 894,480,228.92/31,751.66
  6. Step 6: Final answer
    x = 28,171.13

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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.