Home / 19,728.42-27,228.75-11,661.75

Finding the Fourth Proportional to 19,728.42, 27,228.75 and 11,661.75

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Solution

The fourth proportional to 19,728.42, 27,228.75 and 11,661.75 is: 16,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.42 : 27,228.75 = 11,661.75 : x
  2. Step 2: Convert to fraction form
    19,728.42/27,228.75 = 11,661.75/x
  3. Step 3: Cross multiply
    19,728.42x = 27,228.75 × 11,661.75
  4. Step 4: Simplify right side
    19,728.42x = 317,534,875.31
  5. Step 5: Solve for x
    x = 317,534,875.31/19,728.42
  6. Step 6: Final answer
    x = 16,095.30

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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.