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Finding the Fourth Proportional to 18,477.20, 27,733.20 and 9,718.40

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Solution

The fourth proportional to 18,477.20, 27,733.20 and 9,718.40 is: 14,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.20 : 27,733.20 = 9,718.40 : x
  2. Step 2: Convert to fraction form
    18,477.20/27,733.20 = 9,718.40/x
  3. Step 3: Cross multiply
    18,477.20x = 27,733.20 × 9,718.40
  4. Step 4: Simplify right side
    18,477.20x = 269,522,330.88
  5. Step 5: Solve for x
    x = 269,522,330.88/18,477.20
  6. Step 6: Final answer
    x = 14,586.75

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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.