Home / 19,728.12-27,232.50-13,351.59

Finding the Fourth Proportional to 19,728.12, 27,232.50 and 13,351.59

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Solution

The fourth proportional to 19,728.12, 27,232.50 and 13,351.59 is: 18,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.12 : 27,232.50 = 13,351.59 : x
  2. Step 2: Convert to fraction form
    19,728.12/27,232.50 = 13,351.59/x
  3. Step 3: Cross multiply
    19,728.12x = 27,232.50 × 13,351.59
  4. Step 4: Simplify right side
    19,728.12x = 363,597,174.68
  5. Step 5: Solve for x
    x = 363,597,174.68/19,728.12
  6. Step 6: Final answer
    x = 18,430.40

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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.