Home / 19,872.48-27,422.91-11,910.72

Finding the Fourth Proportional to 19,872.48, 27,422.91 and 11,910.72

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Solution

The fourth proportional to 19,872.48, 27,422.91 and 11,910.72 is: 16,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.48 : 27,422.91 = 11,910.72 : x
  2. Step 2: Convert to fraction form
    19,872.48/27,422.91 = 11,910.72/x
  3. Step 3: Cross multiply
    19,872.48x = 27,422.91 × 11,910.72
  4. Step 4: Simplify right side
    19,872.48x = 326,626,602.60
  5. Step 5: Solve for x
    x = 326,626,602.60/19,872.48
  6. Step 6: Final answer
    x = 16,436.13

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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.