Home / 19,711.10-27,153.70-16,869.36

Finding the Fourth Proportional to 19,711.10, 27,153.70 and 16,869.36

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Solution

The fourth proportional to 19,711.10, 27,153.70 and 16,869.36 is: 23,238.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.10 : 27,153.70 = 16,869.36 : x
  2. Step 2: Convert to fraction form
    19,711.10/27,153.70 = 16,869.36/x
  3. Step 3: Cross multiply
    19,711.10x = 27,153.70 × 16,869.36
  4. Step 4: Simplify right side
    19,711.10x = 458,065,540.63
  5. Step 5: Solve for x
    x = 458,065,540.63/19,711.10
  6. Step 6: Final answer
    x = 23,238.96

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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.