Home / 20,776.97-31,305.71-17,160.22

Finding the Fourth Proportional to 20,776.97, 31,305.71 and 17,160.22

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Solution

The fourth proportional to 20,776.97, 31,305.71 and 17,160.22 is: 25,856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.97 : 31,305.71 = 17,160.22 : x
  2. Step 2: Convert to fraction form
    20,776.97/31,305.71 = 17,160.22/x
  3. Step 3: Cross multiply
    20,776.97x = 31,305.71 × 17,160.22
  4. Step 4: Simplify right side
    20,776.97x = 537,212,856.36
  5. Step 5: Solve for x
    x = 537,212,856.36/20,776.97
  6. Step 6: Final answer
    x = 25,856.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.