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Finding the Fourth Proportional to 11,877.76, 17,799.60 and 6,672.72

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Solution

The fourth proportional to 11,877.76, 17,799.60 and 6,672.72 is: 9,999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.76 : 17,799.60 = 6,672.72 : x
  2. Step 2: Convert to fraction form
    11,877.76/17,799.60 = 6,672.72/x
  3. Step 3: Cross multiply
    11,877.76x = 17,799.60 × 6,672.72
  4. Step 4: Simplify right side
    11,877.76x = 118,771,746.91
  5. Step 5: Solve for x
    x = 118,771,746.91/11,877.76
  6. Step 6: Final answer
    x = 9,999.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.