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Finding the Fourth Proportional to 11,907.52, 17,888.64 and 8,405.62

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Solution

The fourth proportional to 11,907.52, 17,888.64 and 8,405.62 is: 12,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907.52 : 17,888.64 = 8,405.62 : x
  2. Step 2: Convert to fraction form
    11,907.52/17,888.64 = 8,405.62/x
  3. Step 3: Cross multiply
    11,907.52x = 17,888.64 × 8,405.62
  4. Step 4: Simplify right side
    11,907.52x = 150,365,110.16
  5. Step 5: Solve for x
    x = 150,365,110.16/11,907.52
  6. Step 6: Final answer
    x = 12,627.74

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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.