Home / 19,664.10-27,129.87-11,701.80

Finding the Fourth Proportional to 19,664.10, 27,129.87 and 11,701.80

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Solution

The fourth proportional to 19,664.10, 27,129.87 and 11,701.80 is: 16,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.10 : 27,129.87 = 11,701.80 : x
  2. Step 2: Convert to fraction form
    19,664.10/27,129.87 = 11,701.80/x
  3. Step 3: Cross multiply
    19,664.10x = 27,129.87 × 11,701.80
  4. Step 4: Simplify right side
    19,664.10x = 317,468,312.77
  5. Step 5: Solve for x
    x = 317,468,312.77/19,664.10
  6. Step 6: Final answer
    x = 16,144.56

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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.