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Finding the Fourth Proportional to 18,672.32, 28,007.48 and 6,984.66

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Solution

The fourth proportional to 18,672.32, 28,007.48 and 6,984.66 is: 10,476.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.32 : 28,007.48 = 6,984.66 : x
  2. Step 2: Convert to fraction form
    18,672.32/28,007.48 = 6,984.66/x
  3. Step 3: Cross multiply
    18,672.32x = 28,007.48 × 6,984.66
  4. Step 4: Simplify right side
    18,672.32x = 195,622,725.26
  5. Step 5: Solve for x
    x = 195,622,725.26/18,672.32
  6. Step 6: Final answer
    x = 10,476.62

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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.