Home / 19,736.31-27,227.91-12,928.40

Finding the Fourth Proportional to 19,736.31, 27,227.91 and 12,928.40

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Solution

The fourth proportional to 19,736.31, 27,227.91 and 12,928.40 is: 17,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,736.31 : 27,227.91 = 12,928.40 : x
  2. Step 2: Convert to fraction form
    19,736.31/27,227.91 = 12,928.40/x
  3. Step 3: Cross multiply
    19,736.31x = 27,227.91 × 12,928.40
  4. Step 4: Simplify right side
    19,736.31x = 352,013,311.64
  5. Step 5: Solve for x
    x = 352,013,311.64/19,736.31
  6. Step 6: Final answer
    x = 17,835.82

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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.