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Finding the Fourth Proportional to 21,486.08, 32,242.08 and 7,634

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Solution

The fourth proportional to 21,486.08, 32,242.08 and 7,634 is: 11,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.08 : 32,242.08 = 7,634 : x
  2. Step 2: Convert to fraction form
    21,486.08/32,242.08 = 7,634/x
  3. Step 3: Cross multiply
    21,486.08x = 32,242.08 × 7,634
  4. Step 4: Simplify right side
    21,486.08x = 246,136,038.72
  5. Step 5: Solve for x
    x = 246,136,038.72/21,486.08
  6. Step 6: Final answer
    x = 11,455.60

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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.