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Finding the Fourth Proportional to 12,621, 17,417.58 and 7,032

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Solution

The fourth proportional to 12,621, 17,417.58 and 7,032 is: 9,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621 : 17,417.58 = 7,032 : x
  2. Step 2: Convert to fraction form
    12,621/17,417.58 = 7,032/x
  3. Step 3: Cross multiply
    12,621x = 17,417.58 × 7,032
  4. Step 4: Simplify right side
    12,621x = 122,480,422.56
  5. Step 5: Solve for x
    x = 122,480,422.56/12,621
  6. Step 6: Final answer
    x = 9,704.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.