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Finding the Fourth Proportional to 18,867, 28,313.46 and 6,555

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Solution

The fourth proportional to 18,867, 28,313.46 and 6,555 is: 9,837.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867 : 28,313.46 = 6,555 : x
  2. Step 2: Convert to fraction form
    18,867/28,313.46 = 6,555/x
  3. Step 3: Cross multiply
    18,867x = 28,313.46 × 6,555
  4. Step 4: Simplify right side
    18,867x = 185,594,730.30
  5. Step 5: Solve for x
    x = 185,594,730.30/18,867
  6. Step 6: Final answer
    x = 9,837.00

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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.