Home / 19,685.69-27,177.30-13,644.71

Finding the Fourth Proportional to 19,685.69, 27,177.30 and 13,644.71

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Solution

The fourth proportional to 19,685.69, 27,177.30 and 13,644.71 is: 18,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.69 : 27,177.30 = 13,644.71 : x
  2. Step 2: Convert to fraction form
    19,685.69/27,177.30 = 13,644.71/x
  3. Step 3: Cross multiply
    19,685.69x = 27,177.30 × 13,644.71
  4. Step 4: Simplify right side
    19,685.69x = 370,826,241.20
  5. Step 5: Solve for x
    x = 370,826,241.20/19,685.69
  6. Step 6: Final answer
    x = 18,837.36

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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.