Home / 19,739.90-27,232.31-11,777.49

Finding the Fourth Proportional to 19,739.90, 27,232.31 and 11,777.49

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Solution

The fourth proportional to 19,739.90, 27,232.31 and 11,777.49 is: 16,247.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.90 : 27,232.31 = 11,777.49 : x
  2. Step 2: Convert to fraction form
    19,739.90/27,232.31 = 11,777.49/x
  3. Step 3: Cross multiply
    19,739.90x = 27,232.31 × 11,777.49
  4. Step 4: Simplify right side
    19,739.90x = 320,728,199.81
  5. Step 5: Solve for x
    x = 320,728,199.81/19,739.90
  6. Step 6: Final answer
    x = 16,247.72

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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.