Home / 17,390.40-23,991.30-11,728.80

Finding the Fourth Proportional to 17,390.40, 23,991.30 and 11,728.80

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Solution

The fourth proportional to 17,390.40, 23,991.30 and 11,728.80 is: 16,180.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,390.40 : 23,991.30 = 11,728.80 : x
  2. Step 2: Convert to fraction form
    17,390.40/23,991.30 = 11,728.80/x
  3. Step 3: Cross multiply
    17,390.40x = 23,991.30 × 11,728.80
  4. Step 4: Simplify right side
    17,390.40x = 281,389,159.44
  5. Step 5: Solve for x
    x = 281,389,159.44/17,390.40
  6. Step 6: Final answer
    x = 16,180.72

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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.