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Finding the Fourth Proportional to 18,008.41, 27,012.62 and 4,860.78

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Solution

The fourth proportional to 18,008.41, 27,012.62 and 4,860.78 is: 7,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.41 : 27,012.62 = 4,860.78 : x
  2. Step 2: Convert to fraction form
    18,008.41/27,012.62 = 4,860.78/x
  3. Step 3: Cross multiply
    18,008.41x = 27,012.62 × 4,860.78
  4. Step 4: Simplify right side
    18,008.41x = 131,302,403.04
  5. Step 5: Solve for x
    x = 131,302,403.04/18,008.41
  6. Step 6: Final answer
    x = 7,291.17

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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.