Home / 19,891.71-27,439.16-12,426.75

Finding the Fourth Proportional to 19,891.71, 27,439.16 and 12,426.75

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Solution

The fourth proportional to 19,891.71, 27,439.16 and 12,426.75 is: 17,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.71 : 27,439.16 = 12,426.75 : x
  2. Step 2: Convert to fraction form
    19,891.71/27,439.16 = 12,426.75/x
  3. Step 3: Cross multiply
    19,891.71x = 27,439.16 × 12,426.75
  4. Step 4: Simplify right side
    19,891.71x = 340,979,519.40
  5. Step 5: Solve for x
    x = 340,979,519.40/19,891.71
  6. Step 6: Final answer
    x = 17,141.79

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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.