Home / 19,812.48-27,340.92-11,855.40

Finding the Fourth Proportional to 19,812.48, 27,340.92 and 11,855.40

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Solution

The fourth proportional to 19,812.48, 27,340.92 and 11,855.40 is: 16,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.48 : 27,340.92 = 11,855.40 : x
  2. Step 2: Convert to fraction form
    19,812.48/27,340.92 = 11,855.40/x
  3. Step 3: Cross multiply
    19,812.48x = 27,340.92 × 11,855.40
  4. Step 4: Simplify right side
    19,812.48x = 324,137,542.97
  5. Step 5: Solve for x
    x = 324,137,542.97/19,812.48
  6. Step 6: Final answer
    x = 16,360.27

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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.