Home / 31,723.10-43,707.39-20,948.84

Finding the Fourth Proportional to 31,723.10, 43,707.39 and 20,948.84

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Solution

The fourth proportional to 31,723.10, 43,707.39 and 20,948.84 is: 28,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,723.10 : 43,707.39 = 20,948.84 : x
  2. Step 2: Convert to fraction form
    31,723.10/43,707.39 = 20,948.84/x
  3. Step 3: Cross multiply
    31,723.10x = 43,707.39 × 20,948.84
  4. Step 4: Simplify right side
    31,723.10x = 915,619,119.93
  5. Step 5: Solve for x
    x = 915,619,119.93/31,723.10
  6. Step 6: Final answer
    x = 28,862.85

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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.