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Finding the Fourth Proportional to 18,013.53, 27,008.67 and 7,490.82

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Solution

The fourth proportional to 18,013.53, 27,008.67 and 7,490.82 is: 11,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.53 : 27,008.67 = 7,490.82 : x
  2. Step 2: Convert to fraction form
    18,013.53/27,008.67 = 7,490.82/x
  3. Step 3: Cross multiply
    18,013.53x = 27,008.67 × 7,490.82
  4. Step 4: Simplify right side
    18,013.53x = 202,317,085.41
  5. Step 5: Solve for x
    x = 202,317,085.41/18,013.53
  6. Step 6: Final answer
    x = 11,231.40

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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.