Home / 19,884.66-27,440.88-11,386.90

Finding the Fourth Proportional to 19,884.66, 27,440.88 and 11,386.90

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Solution

The fourth proportional to 19,884.66, 27,440.88 and 11,386.90 is: 15,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.66 : 27,440.88 = 11,386.90 : x
  2. Step 2: Convert to fraction form
    19,884.66/27,440.88 = 11,386.90/x
  3. Step 3: Cross multiply
    19,884.66x = 27,440.88 × 11,386.90
  4. Step 4: Simplify right side
    19,884.66x = 312,466,556.47
  5. Step 5: Solve for x
    x = 312,466,556.47/19,884.66
  6. Step 6: Final answer
    x = 15,713.95

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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.