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Finding the Fourth Proportional to 18,360, 25,336.80 and 9,976.50

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Solution

The fourth proportional to 18,360, 25,336.80 and 9,976.50 is: 13,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360 : 25,336.80 = 9,976.50 : x
  2. Step 2: Convert to fraction form
    18,360/25,336.80 = 9,976.50/x
  3. Step 3: Cross multiply
    18,360x = 25,336.80 × 9,976.50
  4. Step 4: Simplify right side
    18,360x = 252,772,585.20
  5. Step 5: Solve for x
    x = 252,772,585.20/18,360
  6. Step 6: Final answer
    x = 13,767.57

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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.