Home / 19,963.40-27,533.94-12,891.56

Finding the Fourth Proportional to 19,963.40, 27,533.94 and 12,891.56

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Solution

The fourth proportional to 19,963.40, 27,533.94 and 12,891.56 is: 17,780.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.40 : 27,533.94 = 12,891.56 : x
  2. Step 2: Convert to fraction form
    19,963.40/27,533.94 = 12,891.56/x
  3. Step 3: Cross multiply
    19,963.40x = 27,533.94 × 12,891.56
  4. Step 4: Simplify right side
    19,963.40x = 354,955,439.55
  5. Step 5: Solve for x
    x = 354,955,439.55/19,963.40
  6. Step 6: Final answer
    x = 17,780.31

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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.