Home / 38,738.42-53,456.37-21,740.66

Finding the Fourth Proportional to 38,738.42, 53,456.37 and 21,740.66

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Solution

The fourth proportional to 38,738.42, 53,456.37 and 21,740.66 is: 30,000.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,738.42 : 53,456.37 = 21,740.66 : x
  2. Step 2: Convert to fraction form
    38,738.42/53,456.37 = 21,740.66/x
  3. Step 3: Cross multiply
    38,738.42x = 53,456.37 × 21,740.66
  4. Step 4: Simplify right side
    38,738.42x = 1,162,176,765.00
  5. Step 5: Solve for x
    x = 1,162,176,765.00/38,738.42
  6. Step 6: Final answer
    x = 30,000.62

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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.