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Finding the Fourth Proportional to 11,801.10, 17,701.60 and 4,407.42

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Solution

The fourth proportional to 11,801.10, 17,701.60 and 4,407.42 is: 6,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,801.10 : 17,701.60 = 4,407.42 : x
  2. Step 2: Convert to fraction form
    11,801.10/17,701.60 = 4,407.42/x
  3. Step 3: Cross multiply
    11,801.10x = 17,701.60 × 4,407.42
  4. Step 4: Simplify right side
    11,801.10x = 78,018,385.87
  5. Step 5: Solve for x
    x = 78,018,385.87/11,801.10
  6. Step 6: Final answer
    x = 6,611.11

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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.