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Finding the Fourth Proportional to 18,365.56, 27,551.88 and 7,835.40

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Solution

The fourth proportional to 18,365.56, 27,551.88 and 7,835.40 is: 11,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.56 : 27,551.88 = 7,835.40 : x
  2. Step 2: Convert to fraction form
    18,365.56/27,551.88 = 7,835.40/x
  3. Step 3: Cross multiply
    18,365.56x = 27,551.88 × 7,835.40
  4. Step 4: Simplify right side
    18,365.56x = 215,880,000.55
  5. Step 5: Solve for x
    x = 215,880,000.55/18,365.56
  6. Step 6: Final answer
    x = 11,754.61

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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.