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Finding the Fourth Proportional to 27,957.75, 38,595.97 and 21,570.00

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Solution

The fourth proportional to 27,957.75, 38,595.97 and 21,570.00 is: 29,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.75 : 38,595.97 = 21,570.00 : x
  2. Step 2: Convert to fraction form
    27,957.75/38,595.97 = 21,570.00/x
  3. Step 3: Cross multiply
    27,957.75x = 38,595.97 × 21,570.00
  4. Step 4: Simplify right side
    27,957.75x = 832,514,879.92
  5. Step 5: Solve for x
    x = 832,514,879.92/27,957.75
  6. Step 6: Final answer
    x = 29,777.61

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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.