Home / 13,540.65-20,261.76-11,178.69

Finding the Fourth Proportional to 13,540.65, 20,261.76 and 11,178.69

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Solution

The fourth proportional to 13,540.65, 20,261.76 and 11,178.69 is: 16,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.65 : 20,261.76 = 11,178.69 : x
  2. Step 2: Convert to fraction form
    13,540.65/20,261.76 = 11,178.69/x
  3. Step 3: Cross multiply
    13,540.65x = 20,261.76 × 11,178.69
  4. Step 4: Simplify right side
    13,540.65x = 226,499,933.89
  5. Step 5: Solve for x
    x = 226,499,933.89/13,540.65
  6. Step 6: Final answer
    x = 16,727.40

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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.