Home / 31,724.08-47,551.74-20,638.66

Finding the Fourth Proportional to 31,724.08, 47,551.74 and 20,638.66

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Solution

The fourth proportional to 31,724.08, 47,551.74 and 20,638.66 is: 30,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.08 : 47,551.74 = 20,638.66 : x
  2. Step 2: Convert to fraction form
    31,724.08/47,551.74 = 20,638.66/x
  3. Step 3: Cross multiply
    31,724.08x = 47,551.74 × 20,638.66
  4. Step 4: Simplify right side
    31,724.08x = 981,404,194.27
  5. Step 5: Solve for x
    x = 981,404,194.27/31,724.08
  6. Step 6: Final answer
    x = 30,935.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.