Home / 39,976.79-55,166.51-21,827.18

Finding the Fourth Proportional to 39,976.79, 55,166.51 and 21,827.18

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Solution

The fourth proportional to 39,976.79, 55,166.51 and 21,827.18 is: 30,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,976.79 : 55,166.51 = 21,827.18 : x
  2. Step 2: Convert to fraction form
    39,976.79/55,166.51 = 21,827.18/x
  3. Step 3: Cross multiply
    39,976.79x = 55,166.51 × 21,827.18
  4. Step 4: Simplify right side
    39,976.79x = 1,204,128,958.77
  5. Step 5: Solve for x
    x = 1,204,128,958.77/39,976.79
  6. Step 6: Final answer
    x = 30,120.71

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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.