Home / 22,728.96-31,370.40-12,660.48

Finding the Fourth Proportional to 22,728.96, 31,370.40 and 12,660.48

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Solution

The fourth proportional to 22,728.96, 31,370.40 and 12,660.48 is: 17,473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.96 : 31,370.40 = 12,660.48 : x
  2. Step 2: Convert to fraction form
    22,728.96/31,370.40 = 12,660.48/x
  3. Step 3: Cross multiply
    22,728.96x = 31,370.40 × 12,660.48
  4. Step 4: Simplify right side
    22,728.96x = 397,164,321.79
  5. Step 5: Solve for x
    x = 397,164,321.79/22,728.96
  6. Step 6: Final answer
    x = 17,473.93

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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.