Home / 19,830.93-27,359.13-12,661.11

Finding the Fourth Proportional to 19,830.93, 27,359.13 and 12,661.11

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Solution

The fourth proportional to 19,830.93, 27,359.13 and 12,661.11 is: 17,467.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.93 : 27,359.13 = 12,661.11 : x
  2. Step 2: Convert to fraction form
    19,830.93/27,359.13 = 12,661.11/x
  3. Step 3: Cross multiply
    19,830.93x = 27,359.13 × 12,661.11
  4. Step 4: Simplify right side
    19,830.93x = 346,396,954.43
  5. Step 5: Solve for x
    x = 346,396,954.43/19,830.93
  6. Step 6: Final answer
    x = 17,467.51

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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.