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Finding the Fourth Proportional to 18,038.26, 27,013.65 and 12,475.99

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Solution

The fourth proportional to 18,038.26, 27,013.65 and 12,475.99 is: 18,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,038.26 : 27,013.65 = 12,475.99 : x
  2. Step 2: Convert to fraction form
    18,038.26/27,013.65 = 12,475.99/x
  3. Step 3: Cross multiply
    18,038.26x = 27,013.65 × 12,475.99
  4. Step 4: Simplify right side
    18,038.26x = 337,022,027.26
  5. Step 5: Solve for x
    x = 337,022,027.26/18,038.26
  6. Step 6: Final answer
    x = 18,683.73

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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.