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Finding the Fourth Proportional to 18,680.63, 28,025.38 and 6,368.63

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Solution

The fourth proportional to 18,680.63, 28,025.38 and 6,368.63 is: 9,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.63 : 28,025.38 = 6,368.63 : x
  2. Step 2: Convert to fraction form
    18,680.63/28,025.38 = 6,368.63/x
  3. Step 3: Cross multiply
    18,680.63x = 28,025.38 × 6,368.63
  4. Step 4: Simplify right side
    18,680.63x = 178,483,119.78
  5. Step 5: Solve for x
    x = 178,483,119.78/18,680.63
  6. Step 6: Final answer
    x = 9,554.45

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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.