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Finding the Fourth Proportional to 13,592.40, 18,754.20 and 8,288.40

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Solution

The fourth proportional to 13,592.40, 18,754.20 and 8,288.40 is: 11,435.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,592.40 : 18,754.20 = 8,288.40 : x
  2. Step 2: Convert to fraction form
    13,592.40/18,754.20 = 8,288.40/x
  3. Step 3: Cross multiply
    13,592.40x = 18,754.20 × 8,288.40
  4. Step 4: Simplify right side
    13,592.40x = 155,442,311.28
  5. Step 5: Solve for x
    x = 155,442,311.28/13,592.40
  6. Step 6: Final answer
    x = 11,435.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.