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Finding the Fourth Proportional to 27,751.72, 38,273.70 and 21,703.72

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Solution

The fourth proportional to 27,751.72, 38,273.70 and 21,703.72 is: 29,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.72 : 38,273.70 = 21,703.72 : x
  2. Step 2: Convert to fraction form
    27,751.72/38,273.70 = 21,703.72/x
  3. Step 3: Cross multiply
    27,751.72x = 38,273.70 × 21,703.72
  4. Step 4: Simplify right side
    27,751.72x = 830,681,668.16
  5. Step 5: Solve for x
    x = 830,681,668.16/27,751.72
  6. Step 6: Final answer
    x = 29,932.62

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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.