Home / 31,724.60-43,709.46-20,950.34

Finding the Fourth Proportional to 31,724.60, 43,709.46 and 20,950.34

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Solution

The fourth proportional to 31,724.60, 43,709.46 and 20,950.34 is: 28,864.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.60 : 43,709.46 = 20,950.34 : x
  2. Step 2: Convert to fraction form
    31,724.60/43,709.46 = 20,950.34/x
  3. Step 3: Cross multiply
    31,724.60x = 43,709.46 × 20,950.34
  4. Step 4: Simplify right side
    31,724.60x = 915,728,048.22
  5. Step 5: Solve for x
    x = 915,728,048.22/31,724.60
  6. Step 6: Final answer
    x = 28,864.92

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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.