Home / 27,289.21-40,938.77-11,278.78

Finding the Fourth Proportional to 27,289.21, 40,938.77 and 11,278.78

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Solution

The fourth proportional to 27,289.21, 40,938.77 and 11,278.78 is: 16,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,289.21 : 40,938.77 = 11,278.78 : x
  2. Step 2: Convert to fraction form
    27,289.21/40,938.77 = 11,278.78/x
  3. Step 3: Cross multiply
    27,289.21x = 40,938.77 × 11,278.78
  4. Step 4: Simplify right side
    27,289.21x = 461,739,380.30
  5. Step 5: Solve for x
    x = 461,739,380.30/27,289.21
  6. Step 6: Final answer
    x = 16,920.22

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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.