Home / 19,721.25-27,215.37-12,657.24

Finding the Fourth Proportional to 19,721.25, 27,215.37 and 12,657.24

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Solution

The fourth proportional to 19,721.25, 27,215.37 and 12,657.24 is: 17,467.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.25 : 27,215.37 = 12,657.24 : x
  2. Step 2: Convert to fraction form
    19,721.25/27,215.37 = 12,657.24/x
  3. Step 3: Cross multiply
    19,721.25x = 27,215.37 × 12,657.24
  4. Step 4: Simplify right side
    19,721.25x = 344,471,469.78
  5. Step 5: Solve for x
    x = 344,471,469.78/19,721.25
  6. Step 6: Final answer
    x = 17,467.02

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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.