Home / 18,780.75-25,917.48-10,397.79

Finding the Fourth Proportional to 18,780.75, 25,917.48 and 10,397.79

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Solution

The fourth proportional to 18,780.75, 25,917.48 and 10,397.79 is: 14,348.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.75 : 25,917.48 = 10,397.79 : x
  2. Step 2: Convert to fraction form
    18,780.75/25,917.48 = 10,397.79/x
  3. Step 3: Cross multiply
    18,780.75x = 25,917.48 × 10,397.79
  4. Step 4: Simplify right side
    18,780.75x = 269,484,514.37
  5. Step 5: Solve for x
    x = 269,484,514.37/18,780.75
  6. Step 6: Final answer
    x = 14,348.98

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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.