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Finding the Fourth Proportional to 19,999.76, 27,599.70 and 12,042.32

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Solution

The fourth proportional to 19,999.76, 27,599.70 and 12,042.32 is: 16,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.76 : 27,599.70 = 12,042.32 : x
  2. Step 2: Convert to fraction form
    19,999.76/27,599.70 = 12,042.32/x
  3. Step 3: Cross multiply
    19,999.76x = 27,599.70 × 12,042.32
  4. Step 4: Simplify right side
    19,999.76x = 332,364,419.30
  5. Step 5: Solve for x
    x = 332,364,419.30/19,999.76
  6. Step 6: Final answer
    x = 16,618.42

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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.