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Finding the Fourth Proportional to 18,013.41, 27,008.49 and 7,490.69

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Solution

The fourth proportional to 18,013.41, 27,008.49 and 7,490.69 is: 11,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.41 : 27,008.49 = 7,490.69 : x
  2. Step 2: Convert to fraction form
    18,013.41/27,008.49 = 7,490.69/x
  3. Step 3: Cross multiply
    18,013.41x = 27,008.49 × 7,490.69
  4. Step 4: Simplify right side
    18,013.41x = 202,312,225.96
  5. Step 5: Solve for x
    x = 202,312,225.96/18,013.41
  6. Step 6: Final answer
    x = 11,231.20

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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.