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Finding the Fourth Proportional to 31,751.92, 47,628.28 and 21,888.56

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Solution

The fourth proportional to 31,751.92, 47,628.28 and 21,888.56 is: 32,833.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.92 : 47,628.28 = 21,888.56 : x
  2. Step 2: Convert to fraction form
    31,751.92/47,628.28 = 21,888.56/x
  3. Step 3: Cross multiply
    31,751.92x = 47,628.28 × 21,888.56
  4. Step 4: Simplify right side
    31,751.92x = 1,042,514,464.48
  5. Step 5: Solve for x
    x = 1,042,514,464.48/31,751.92
  6. Step 6: Final answer
    x = 32,833.12

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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.