Home / 31,684.69-43,705.74-20,350.36

Finding the Fourth Proportional to 31,684.69, 43,705.74 and 20,350.36

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Solution

The fourth proportional to 31,684.69, 43,705.74 and 20,350.36 is: 28,071.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,684.69 : 43,705.74 = 20,350.36 : x
  2. Step 2: Convert to fraction form
    31,684.69/43,705.74 = 20,350.36/x
  3. Step 3: Cross multiply
    31,684.69x = 43,705.74 × 20,350.36
  4. Step 4: Simplify right side
    31,684.69x = 889,427,543.07
  5. Step 5: Solve for x
    x = 889,427,543.07/31,684.69
  6. Step 6: Final answer
    x = 28,071.21

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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.