Home / 19,717.69-27,213.54-12,540.12

Finding the Fourth Proportional to 19,717.69, 27,213.54 and 12,540.12

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Solution

The fourth proportional to 19,717.69, 27,213.54 and 12,540.12 is: 17,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,717.69 : 27,213.54 = 12,540.12 : x
  2. Step 2: Convert to fraction form
    19,717.69/27,213.54 = 12,540.12/x
  3. Step 3: Cross multiply
    19,717.69x = 27,213.54 × 12,540.12
  4. Step 4: Simplify right side
    19,717.69x = 341,261,093.91
  5. Step 5: Solve for x
    x = 341,261,093.91/19,717.69
  6. Step 6: Final answer
    x = 17,307.36

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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.