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Finding the Fourth Proportional to 18,809.10, 28,215.06 and 6,329.16

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Solution

The fourth proportional to 18,809.10, 28,215.06 and 6,329.16 is: 9,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.10 : 28,215.06 = 6,329.16 : x
  2. Step 2: Convert to fraction form
    18,809.10/28,215.06 = 6,329.16/x
  3. Step 3: Cross multiply
    18,809.10x = 28,215.06 × 6,329.16
  4. Step 4: Simplify right side
    18,809.10x = 178,577,629.15
  5. Step 5: Solve for x
    x = 178,577,629.15/18,809.10
  6. Step 6: Final answer
    x = 9,494.21

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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.