Home / 17,389.40-23,989.92-11,727.80

Finding the Fourth Proportional to 17,389.40, 23,989.92 and 11,727.80

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Solution

The fourth proportional to 17,389.40, 23,989.92 and 11,727.80 is: 16,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,389.40 : 23,989.92 = 11,727.80 : x
  2. Step 2: Convert to fraction form
    17,389.40/23,989.92 = 11,727.80/x
  3. Step 3: Cross multiply
    17,389.40x = 23,989.92 × 11,727.80
  4. Step 4: Simplify right side
    17,389.40x = 281,348,983.78
  5. Step 5: Solve for x
    x = 281,348,983.78/17,389.40
  6. Step 6: Final answer
    x = 16,179.34

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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.