Home / 20,777.13-31,305.94-17,160.38

Finding the Fourth Proportional to 20,777.13, 31,305.94 and 17,160.38

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Solution

The fourth proportional to 20,777.13, 31,305.94 and 17,160.38 is: 25,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.13 : 31,305.94 = 17,160.38 : x
  2. Step 2: Convert to fraction form
    20,777.13/31,305.94 = 17,160.38/x
  3. Step 3: Cross multiply
    20,777.13x = 31,305.94 × 17,160.38
  4. Step 4: Simplify right side
    20,777.13x = 537,221,826.66
  5. Step 5: Solve for x
    x = 537,221,826.66/20,777.13
  6. Step 6: Final answer
    x = 25,856.40

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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.