Home / 10,939.74-16,370.73-8,010.78

Finding the Fourth Proportional to 10,939.74, 16,370.73 and 8,010.78

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Solution

The fourth proportional to 10,939.74, 16,370.73 and 8,010.78 is: 11,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.74 : 16,370.73 = 8,010.78 : x
  2. Step 2: Convert to fraction form
    10,939.74/16,370.73 = 8,010.78/x
  3. Step 3: Cross multiply
    10,939.74x = 16,370.73 × 8,010.78
  4. Step 4: Simplify right side
    10,939.74x = 131,142,316.47
  5. Step 5: Solve for x
    x = 131,142,316.47/10,939.74
  6. Step 6: Final answer
    x = 11,987.70

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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.