Home / 27,311.34-40,971.32-9,780.78

Finding the Fourth Proportional to 27,311.34, 40,971.32 and 9,780.78

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Solution

The fourth proportional to 27,311.34, 40,971.32 and 9,780.78 is: 14,672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.34 : 40,971.32 = 9,780.78 : x
  2. Step 2: Convert to fraction form
    27,311.34/40,971.32 = 9,780.78/x
  3. Step 3: Cross multiply
    27,311.34x = 40,971.32 × 9,780.78
  4. Step 4: Simplify right side
    27,311.34x = 400,731,467.23
  5. Step 5: Solve for x
    x = 400,731,467.23/27,311.34
  6. Step 6: Final answer
    x = 14,672.71

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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.