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Finding the Fourth Proportional to 18,328.55, 27,471.20 and 7,795.40

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Solution

The fourth proportional to 18,328.55, 27,471.20 and 7,795.40 is: 11,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.55 : 27,471.20 = 7,795.40 : x
  2. Step 2: Convert to fraction form
    18,328.55/27,471.20 = 7,795.40/x
  3. Step 3: Cross multiply
    18,328.55x = 27,471.20 × 7,795.40
  4. Step 4: Simplify right side
    18,328.55x = 214,148,816.15
  5. Step 5: Solve for x
    x = 214,148,816.15/18,328.55
  6. Step 6: Final answer
    x = 11,683.90

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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.