Home / 16,813.72-23,181.24-13,777.55

Finding the Fourth Proportional to 16,813.72, 23,181.24 and 13,777.55

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Solution

The fourth proportional to 16,813.72, 23,181.24 and 13,777.55 is: 18,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,813.72 : 23,181.24 = 13,777.55 : x
  2. Step 2: Convert to fraction form
    16,813.72/23,181.24 = 13,777.55/x
  3. Step 3: Cross multiply
    16,813.72x = 23,181.24 × 13,777.55
  4. Step 4: Simplify right side
    16,813.72x = 319,380,693.16
  5. Step 5: Solve for x
    x = 319,380,693.16/16,813.72
  6. Step 6: Final answer
    x = 18,995.24

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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.