Home / 19,761.10-27,272.88-12,211.10

Finding the Fourth Proportional to 19,761.10, 27,272.88 and 12,211.10

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Solution

The fourth proportional to 19,761.10, 27,272.88 and 12,211.10 is: 16,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.10 : 27,272.88 = 12,211.10 : x
  2. Step 2: Convert to fraction form
    19,761.10/27,272.88 = 12,211.10/x
  3. Step 3: Cross multiply
    19,761.10x = 27,272.88 × 12,211.10
  4. Step 4: Simplify right side
    19,761.10x = 333,031,864.97
  5. Step 5: Solve for x
    x = 333,031,864.97/19,761.10
  6. Step 6: Final answer
    x = 16,852.90

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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.