Home / 13,723.66-18,939.59-8,348.20

Finding the Fourth Proportional to 13,723.66, 18,939.59 and 8,348.20

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Solution

The fourth proportional to 13,723.66, 18,939.59 and 8,348.20 is: 11,521.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.66 : 18,939.59 = 8,348.20 : x
  2. Step 2: Convert to fraction form
    13,723.66/18,939.59 = 8,348.20/x
  3. Step 3: Cross multiply
    13,723.66x = 18,939.59 × 8,348.20
  4. Step 4: Simplify right side
    13,723.66x = 158,111,485.24
  5. Step 5: Solve for x
    x = 158,111,485.24/13,723.66
  6. Step 6: Final answer
    x = 11,521.09

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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.