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Finding the Fourth Proportional to 18,605.30, 27,907.94 and 17,424.32

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Solution

The fourth proportional to 18,605.30, 27,907.94 and 17,424.32 is: 26,136.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.30 : 27,907.94 = 17,424.32 : x
  2. Step 2: Convert to fraction form
    18,605.30/27,907.94 = 17,424.32/x
  3. Step 3: Cross multiply
    18,605.30x = 27,907.94 × 17,424.32
  4. Step 4: Simplify right side
    18,605.30x = 486,276,781.12
  5. Step 5: Solve for x
    x = 486,276,781.12/18,605.30
  6. Step 6: Final answer
    x = 26,136.47

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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.