Home / 31,513.23-43,480.67-20,756.97

Finding the Fourth Proportional to 31,513.23, 43,480.67 and 20,756.97

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Solution

The fourth proportional to 31,513.23, 43,480.67 and 20,756.97 is: 28,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,513.23 : 43,480.67 = 20,756.97 : x
  2. Step 2: Convert to fraction form
    31,513.23/43,480.67 = 20,756.97/x
  3. Step 3: Cross multiply
    31,513.23x = 43,480.67 × 20,756.97
  4. Step 4: Simplify right side
    31,513.23x = 902,526,858.99
  5. Step 5: Solve for x
    x = 902,526,858.99/31,513.23
  6. Step 6: Final answer
    x = 28,639.62

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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.