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Finding the Fourth Proportional to 11,643.52, 17,462.20 and 7,945.08

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Solution

The fourth proportional to 11,643.52, 17,462.20 and 7,945.08 is: 11,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,643.52 : 17,462.20 = 7,945.08 : x
  2. Step 2: Convert to fraction form
    11,643.52/17,462.20 = 7,945.08/x
  3. Step 3: Cross multiply
    11,643.52x = 17,462.20 × 7,945.08
  4. Step 4: Simplify right side
    11,643.52x = 138,738,575.98
  5. Step 5: Solve for x
    x = 138,738,575.98/11,643.52
  6. Step 6: Final answer
    x = 11,915.52

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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.