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Finding the Fourth Proportional to 18,012.91, 27,000.91 and 7,489.04

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Solution

The fourth proportional to 18,012.91, 27,000.91 and 7,489.04 is: 11,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.91 : 27,000.91 = 7,489.04 : x
  2. Step 2: Convert to fraction form
    18,012.91/27,000.91 = 7,489.04/x
  3. Step 3: Cross multiply
    18,012.91x = 27,000.91 × 7,489.04
  4. Step 4: Simplify right side
    18,012.91x = 202,210,895.03
  5. Step 5: Solve for x
    x = 202,210,895.03/18,012.91
  6. Step 6: Final answer
    x = 11,225.89

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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.