Home / 36,780.31-55,178.66-13,406.75

Finding the Fourth Proportional to 36,780.31, 55,178.66 and 13,406.75

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Solution

The fourth proportional to 36,780.31, 55,178.66 and 13,406.75 is: 20,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,780.31 : 55,178.66 = 13,406.75 : x
  2. Step 2: Convert to fraction form
    36,780.31/55,178.66 = 13,406.75/x
  3. Step 3: Cross multiply
    36,780.31x = 55,178.66 × 13,406.75
  4. Step 4: Simplify right side
    36,780.31x = 739,766,257.58
  5. Step 5: Solve for x
    x = 739,766,257.58/36,780.31
  6. Step 6: Final answer
    x = 20,113.11

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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.