Home / 19,939.46-29,899.44-11,389.88

Finding the Fourth Proportional to 19,939.46, 29,899.44 and 11,389.88

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Solution

The fourth proportional to 19,939.46, 29,899.44 and 11,389.88 is: 17,079.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.46 : 29,899.44 = 11,389.88 : x
  2. Step 2: Convert to fraction form
    19,939.46/29,899.44 = 11,389.88/x
  3. Step 3: Cross multiply
    19,939.46x = 29,899.44 × 11,389.88
  4. Step 4: Simplify right side
    19,939.46x = 340,551,033.67
  5. Step 5: Solve for x
    x = 340,551,033.67/19,939.46
  6. Step 6: Final answer
    x = 17,079.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.