Home / 16,811.72-23,178.48-13,775.55

Finding the Fourth Proportional to 16,811.72, 23,178.48 and 13,775.55

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Solution

The fourth proportional to 16,811.72, 23,178.48 and 13,775.55 is: 18,992.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.72 : 23,178.48 = 13,775.55 : x
  2. Step 2: Convert to fraction form
    16,811.72/23,178.48 = 13,775.55/x
  3. Step 3: Cross multiply
    16,811.72x = 23,178.48 × 13,775.55
  4. Step 4: Simplify right side
    16,811.72x = 319,296,194.27
  5. Step 5: Solve for x
    x = 319,296,194.27/16,811.72
  6. Step 6: Final answer
    x = 18,992.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.