Home / 16,813.86-23,181.44-13,777.68

Finding the Fourth Proportional to 16,813.86, 23,181.44 and 13,777.68

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Solution

The fourth proportional to 16,813.86, 23,181.44 and 13,777.68 is: 18,995.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,813.86 : 23,181.44 = 13,777.68 : x
  2. Step 2: Convert to fraction form
    16,813.86/23,181.44 = 13,777.68/x
  3. Step 3: Cross multiply
    16,813.86x = 23,181.44 × 13,777.68
  4. Step 4: Simplify right side
    16,813.86x = 319,386,393.37
  5. Step 5: Solve for x
    x = 319,386,393.37/16,813.86
  6. Step 6: Final answer
    x = 18,995.42

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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.